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Angelique Lartaux (CNRS/IJCLab)9/21/26, 10:30 AMM39 - Next generation gravitational wave observations4) Invited talk
Einstein Telescope is the next generation ground based European gravitational-wave detector that will change the paradigm of gravitational wave detection to routine observations and with observable signals up to the Universe's first moments. To reach this goal, an increase of sensitivity by at least a factor of ten with respect to the current generation gravitational-wave detectors' final...
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Dr Andrea Droghetti (Ca' Foscari University of Venice, Italy)9/21/26, 10:30 AMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
Two-terminal spintronic devices remain challenging to model under realistic operating conditions, where the interplay of complex electronic structures, correlation effects and bias-driven non-equilibrium dynamics may significantly impact charge and spin transport. Existing ab initio methods either capture bias-dependent transport but neglect dynamical correlations or include correlations but...
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C. Schneider (Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)9/21/26, 10:30 AMM10 - Mesoscopic superconductivity and quantum circuits4) Invited talk
The fluxonium qubit, a small Josephson junction shunted by a superinductance, offers large anharmonicity, protection from charge noise, and coherence times beyond the millisecond, making it a compelling alternative to the transmon. I will present our recent progress in developing fluxonium as a scalable platform. First, I will discuss improvements in our junction fabrication process,...
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Roser Valenti9/21/26, 10:30 AMM11 - Electron-phonon coupling in correlated quantum matter4) Invited talk
The nature of the ground state of the spin-1/2 Heisenberg model on frustrated triangular and kagome lattices remains a central question in quantum magnetism. Here, we will present a variational Monte Carlo study of a spin–phonon Hamiltonian on the triangular and kagome lattices, fully incorporating quantum dynamics of both spins and phonons., and will discuss possible instabilities of the...
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Sandra Brünken (HFML-FELIX & Radboud University)9/21/26, 10:30 AMM14 - Experimental Studies of Negatively Charged Ions4) Invited talk
The discovery of molecular anions in the interstellar medium nearly 20 years ago has profoundly changed our understanding of astrochemical networks. The radio-astronomical identification of carbon-chain and nitrile anions such as C$_8$H$^⁻$ and C$_3$N$^-$ has revealed that anions can reach appreciable abundances in cold interstellar environments. In addition to interstellar and circumstellar...
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Cesare Franchini (Computational Materials Physics, University of Vienna, Austria), Jacques Tempere (TQC, Universiteit Antwerpen, Belgium), Matthew Houtput (University of Antwerp), Dr Serghei Klimin (TQC, University of Antwerp, Belgium)9/21/26, 10:30 AMM12 - Recent Developments of the Polaron Theory3) Contributed talk
The present minicolloquium builds upon and extends a series of successful sessions organized with our participation at previous EPS-CMD Conferences: “Collective Effects and Non-Equilibrium Phenomena in Quantum Gases and Superconductors” (CMD29 – Manchester, 2022), “Quantum Gases as Analogues of Condensed Matter Systems” (CMD30 – Milano, 2023), and “Collective and Nonlinear Phenomena in...
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Max Hodapp9/21/26, 10:30 AMM23 - Ab initio modeling and machine learning of crystal defects4) Invited talk
In alloy modeling, atomistic simulation is a major tool that can reveal the relevant defect mechanisms influencing structural material properties (strength, fracture toughness, etc.). Traditionally, atomistic simulations have been based on empirical potentials, which, however, lack quantitative and often qualitative accuracy. For alloy screening, atomistic simulations are therefore replaced by...
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Peter Wahl (University of St Andrews)9/21/26, 10:30 AM1M04 - Non-crystalline quantum matter4) Invited talk
Moiré systems have emerged as a highly tunable platform to study emergent electronic phenomena, enabling effectively materials-based quantum simulators. A key to microscopic understanding of the correlation physics is to unravel the electronic structure of these materials. Because of the low energy scales and flat bands with band widths on the order of a few millielectronvolts, spectroscopic...
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Prof. Andrei Kirilyuk (HFML-FELIX, Radboud University)9/21/26, 10:30 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching4) Invited talk
Ultrafast phononic switching of ferroic order
Andrei Kirilyuk
HFML-FELIX, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The NetherlandsVibrations of the crystal lattice have a significant impact on the orbital dynamics of the electrons, and through it, on spins. Ultrafast excitation of phonons resulting in drastic repopulation of phononic system was thus shown to be able to...
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Simon Fichtner (Kiel University/Fraunhofer ISIT)9/21/26, 10:30 AMM32 - Physical Vapor Deposition of Nitride Thin Films4) Invited talk
As a research direction, wurtzite structured nitride ferroelectrics have seen rapid progress since their discovery in 2019 in terms of scalability, integration and fundamental understanding [1,2]. As the material class becomes more mature, harsh environment data storage and computing emerges as a commercial application target where wurtzite ferroelectrics have substantial advantages compared...
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Carlos Sa de Melo (Georgia Institute of Technology)9/21/26, 10:45 AMM12 - Recent Developments of the Polaron Theory4) Invited talk
We investigate nearly degenerate Bose-Fermi mixtures and show that the breaking of generalized supersymmetry (gSUSY) between bosons and fermions, with up to two internal states, manifests itself through the emergence of fermionic Goldstino modes with up to four flavors. In particular, we draw a distinction between typical supersymmetry (SUSY), where bosons have pseudospin 0 and fermions have...
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Anna Galler (TU Graz, Austria)9/21/26, 10:45 AMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
Two-dimensional hexagonal materials such as transition-metal dichalcogenides exhibit valley degrees of freedom, offering fascinating potential for valley-based optoelectronics. In nonlinear optics, the K and K’ valleys provide excitation resonances that can be used for ultrafast control of excitons, Bloch oscillations, and Floquet physics. Under intense laser fields, however, the role of...
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Marco Deluca (Silicon Austria Labs GmbH)9/21/26, 11:00 AMM32 - Physical Vapor Deposition of Nitride Thin Films3) Contributed talk
Al(X)N substituted with Sc (Al1-xScxN, ASN) is one of the most popular thin film materials for piezoelectric micro-electromechanical system (MEMS) devices. One of the main challenges is to tailor composition and microstructure of ASN to achieve piezoelectric properties suitable for actuator applications.
In this work, we will showcase some approaches to enhance the piezoelectric...
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Dr Rostislav Mikhaylovskiy (Lancaster University)9/21/26, 11:00 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching4) Invited talk
Realisation of quantum information technologies has
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become a key incentive in material studies and photonics.
Orbital 4f states of rare-earth dopants in solids have been
identified as one of the most promising agents of quantum
computation. Here I discuss how to utilize light waves at THz
frequencies to selectively control the low-energy rare-earth
states split by the crystal field. As... -
Uwe Bovensiepen (University of Duisburg-Essen, Faculty of Physics and CENIDE)9/21/26, 11:00 AMM03 - Correlated Materials Out of Equilibrium4) Invited talk
The transition metal dichalcogenide 1$T$-TaS$_2$ is known for the formation of a charge density wave with a Star-of-David shaped reconstruction of Ta atoms [1], its spin liquid behaviour [2], and its non-equilibrium hidden state [3]. The charge density wave is connected to Mott physics and formation of a Doublon excitation [4]. In this talk recent results obtained on crystals with...
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Massimo Capone (SISSA - International School for Advanced Studies - Trieste)9/21/26, 11:00 AMM11 - Electron-phonon coupling in correlated quantum matter4) Invited talk
A widespread belief treats electron–phonon and electron–electron (Hubbard) interactions as mutually exclusive, assuming a direct competition in which one interaction dominates while the other becomes irrelevant.
In this talk, I will discuss how this scenario—although justified in some materials—is challenged in many modern quantum systems, ranging from alkali-metal-doped fullerides [1] to...
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Luciano Pereira (ICFO-Institut de Ciencies Fotoniques)9/21/26, 11:00 AMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
In superconducting qubits, the standard measurement strategy is dispersive readout, where the qubit is coupled to an off-resonant cavity via a Jaynes-Cummings coupling [1]. This readout scheme works well for weak readout pulses, but its fidelity diminishes when the readout strength exceeds a critical value [2] due to measurement-induced state transitions [3].
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Here, we introduce a new... -
Viviane C. Schmidt (Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Austria ; Max-Planck-Institut für Kernphysik, Heidelberg, Germany)9/21/26, 11:00 AMM14 - Experimental Studies of Negatively Charged Ions4) Invited talk
Molecules offer a variety of excitation possibilities through their electronic, vibrational and rotational degrees of freedom. The coupling between those modes and consequentially the corresponding decay rates range from atomic timescales to hours and beyond. Negatively charged species are especially well suited to study these mechanisms as their excess electron is typically loosely bound and...
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Daniela Gonçalves (School of Physics, Engineering and Technology, University of York)9/21/26, 11:00 AMM04 - Non-crystalline quantum matter3) Contributed talk
Within the rich landscape of 2D van der Waals heterostructures, proximitised graphene has garnered significant interest as a platform to study emergent spin-dependent phenomena. Here, we apply large-scale Chebyshev spectral methods to simulate the real-space electronic structure of atomic defects in graphene/atomically thin semiconductor heterostructures. This approach allows us to accurately...
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Filippo Santoliquido (Gran Sasso Science Institute (GSSI))9/21/26, 11:00 AMM39 - Next generation gravitational wave observations4) Invited talk
The Einstein Telescope (ET) is a European project for a third-generation gravitational-wave detector designed to increase the sensitivity of present interferometers by approximately one order of magnitude. Two reference designs are currently under investigation: a triangular-shaped detector with 10 km arms, and a configuration with two L-shaped detectors with 15 km arms, both located in...
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Dr David Holec (Montanuniversität Leoben)9/21/26, 11:00 AMM23 - Ab initio modeling and machine learning of crystal defects4) Invited talk
Transition metal nitrides (TMNs) are vital protective coatings for structural and moving components due to their exceptional thermal stability, corrosion resistance, and mechanical properties. However, their strong covalent/ionic bonding and limited slip systems often lead to brittle fracture. Recent studies suggest that defect engineering—specifically via vacancies—is a promising strategy to...
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Nikolay Prokofiev (UMass, Amherst)9/21/26, 11:15 AMM12 - Recent Developments of the Polaron Theory4) Invited talk
Migdal-Eliashberg theory (MET) describes electrons interacting with phonons in the adiabatic limit when the phonon Debye frequency is much smaller than the Fermi energy. A conventional belief is that MET holds even at strong coupling, when electron self-energy is large, and breaks down only near the point where the dressed phonon spectrum softens to near zero. We analyze numerically and...
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João Santos Silva (CF-UM-UP, Centro de Física do Porto, FCUP)9/21/26, 11:15 AMM04 - Non-crystalline quantum matter3) Contributed talk
Weyl nodal loop semimetals are topological semimetals where the valence and conduction bands linearly touch along one dimensional loops in momentum space. A manifestation of their non-trivial topology is the presence of zero energy surface states, induced by chiral symmetry, on surfaces parallel to the loop plane. Unlike their insulator counterparts, these exotic phases may be unstable to...
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Mr Wayne Yeo (Colorado School of Mines)9/21/26, 11:15 AMM32 - Physical Vapor Deposition of Nitride Thin Films3) Contributed talk
Thin film aluminum nitride (AlN) and its derivative alloys are widely utilized in lead-free piezoelectric microelectromechanical systems due to its high acoustic velocity, deposition process reproducibility and chemical compatibility with semiconductor technologies. While (Al, Sc)N is by far the most used alloy, there is significant push to find a replacement for Sc due to supply concerns....
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Dr Olivier Buisson (Institut NEEL-CNRS-UGA-France)9/21/26, 11:15 AMM10 - Mesoscopic superconductivity and quantum circuits4) Invited talk
The field of superconducting qubits is constantly evolving with new types of circuit and designs but, when it comes to qubit readout, the use of simple transverse linear coupling is overwhelmingly prevalent. This type of coupling intrinsically limits the readout mode’s dispersive shift and is known to cause Purcell effect. We propose here to overcome these limitations by engineering a...
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Balasubramanian Sundarapandian (Silicon Austria Labs GmbH)9/21/26, 11:30 AM1M32 - Physical Vapor Deposition of Nitride Thin Films3) Contributed talk
Next-generation telecommunication standards demand compact filters that can offer low acoustic loss, wide bandwidth, and steep filter skirts to enable efficient operation at high frequencies. To meet these requirements, bulk acoustic wave (BAW) resonators that combine a high quality factor (Q) factor with a high effective electro-mechanical coupling coefficient (keff2) are desired. Wurtzite...
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Aleksandr Buzdakov (Istituto Italiano di Tecnologia)9/21/26, 11:30 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching3) Contributed talk
Antiferromagnets are promising for spintronics and ultrafast data storage. While femtosecond lasers efficiently quench antiferromagnetic (AFM) order, demagnetization timescales in AFM insulators vary dramatically from picoseconds to nanoseconds. The mechanism behind this variability remains poorly understood. Here, we report the ultrafast melting of AFM order in the insulator Cr$_2$O$_3$...
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Henrique Veiga (Centro de Física das Universidades do Porto e Minho; University of York)9/21/26, 11:30 AMM04 - Non-crystalline quantum matter3) Contributed talk
In condensed matter systems where translational invariance is inevitably or deliberately broken, probing local observables is paramount to addressing a wealth of intriguing phenomena, such as multifractality, quasiparticle interference and real-space orbital magnetic textures.
In this talk we show that the well-known computational bottleneck of computing local properties in non-periodic...
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Francesco Crescimbeni9/21/26, 11:30 AMM39 - Next generation gravitational wave observations4) Invited talk
Gravitational waves have opened a new observational window onto the astrophysics of compact objects. With next-generation detectors such as the Einstein Telescope, General Relativity (GR) and the nature of compact objects will be probed with unprecedented precision.
In this talk, building on the activities of the Fundamental Physics division of the Einstein Telescope Collaboration, I will...
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Vy T.T. Nguyen (Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, A-6020 Innsbruck, Austria)9/21/26, 11:30 AMM14 - Experimental Studies of Negatively Charged Ions3) Contributed talk
In this contribution, we have investigated the molecular mechanisms of microhydrated clusters of azolic radiosensitisers – nimorazole (NIMO) and 2-bromo-5-nitrothiazole (BNT) upon electron attachment. Experiments were performed in a recently constructed setup in our laboratory at the University of Innsbruck. The apparatus consists of a molecular aggregation source employing supersonic...
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Kailun Sha (TU Wien)9/21/26, 11:30 AMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Transition metal nitrides (TMNs) exhibit exceptional mechanical properties influenced significantly by crystallographic defects. Modeling these defects with ab initio accuracy is challenging due to large system sizes and often lower symmetries resulting from local relaxations around a defect. In this contribution, we discuss the development of machine learning interatomic potentials (MLIPs)...
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Tommaso Maria Mazzocchi (Graz University of Technology)9/21/26, 11:30 AMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
I will illustrate possible applications of the "mixed-configuration approximation" (MCA) [1,2], an approximate method that combines the solutions to independent impurity problems obtained with single-band impurity solvers to study nonequilibrium multiorbital systems at moderate computational cost. We merge the MCA with the so-called auxiliary master equation approach (AMEA) single-impurity...
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Emin Moghadas9/21/26, 11:30 AMM11 - Electron-phonon coupling in correlated quantum matter3) Contributed talk
We present a dynamical mean-field study of the Hubbard–Holstein model in the strong-coupling regime. We demonstrate that the interplay between local spin and charge fluctuations, driven by strong electron–electron and electron–phonon interactions, stabilizes commensurate charge-density-wave order over a broad range of electron densities. Remarkably, this phase persists even at fillings that...
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Andrey S. Mishchenko (Institute of Physics, Zagreb, Croatia)9/21/26, 11:45 AMM12 - Recent Developments of the Polaron Theory4) Invited talk
Diagrammatic Monte Carlo (DMC) is the numerical technique of summation of Feynman diagrams without approximations. Bold DMC (BDMC) is the method of self-consistent summation of the irreducible skeleton Feynman diagrams, which are used to modify the Green functions and interparticle interactions by solving the Dyson equation. Modified propagators are used again, forming a self-consistent loop...
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Alexander Reichmann (Montanuniversität Leoben)9/21/26, 11:45 AMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Simulations of SiC crystal growth on an atomistic scale were, in the past, most commonly done with Monte Carlo (MC) based methods, such as kinetic lattice MC or kinetic super lattice MC. These, however, suffer from the fact that they have to use predefined deposition sites and reaction rates, making it difficult to realistically simulate defects, such as dislocations or stacking faults. With...
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Tamara Terzic9/21/26, 11:45 AMM32 - Physical Vapor Deposition of Nitride Thin Films3) Contributed talk
Molybdenum (Mo) thin films find application as a bottom electrode material for acoustic resonators due to their favorable acoustic and physical properties. For subsequent overgrowth with piezoelectric materials such as AlN, which are necessary for acoustic resonators, high quality and low roughness of Mo (110) thin films are essential. Direct deposition of Mo on silicon (Si) is challenging, as...
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Felix Wagner (ETH Zurich)9/21/26, 11:45 AMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Superconducting qubits are one of the most promising platforms for universal quantum computing, yet they suffer from errors induced by interactions with their environment. In particular, radiation — both in the high-energy and infrared regimes — can break Cooper pairs in the superconductor and create Bogoliubov quasiparticles. Upon diffusing towards the Josephson junction, these quasiparticles...
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Aiman Al-Eryani (Ruhr Uni Bochum)9/21/26, 11:45 AMM11 - Electron-phonon coupling in correlated quantum matter3) Contributed talk
Electron-electron and electron-phonon interactions are responsible for the formation of spin, charge, and superconducting correlations in layered quantum materials. A paradigmatic model for such materials that captures both kinds of interactions is the two-dimensional Hubbard-Holstein model with a dispersionless Einstein phonon.
In this work, we provide a detailed analysis of the...
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Maximilian Märk9/21/26, 11:45 AMM14 - Experimental Studies of Negatively Charged Ions3) Contributed talk
Many studies are available discussing ion-neutral reactions at low temperatures, while mutual neutralization reactions (MN) are still experimentally rare. However, these anion-cation reactions play a crucial role in the chemistry of the interstellar medium. Models of these clouds rely heavily on their reaction rate coefficients [T. J. Millar $\textit{et al.}$, Chem. Rev. 117, (2017)]. In the...
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Duilio De Santis (Institute for Theoretical Physics, ETH Zurich, 8093 Zurich, Switzerland)9/21/26, 11:45 AMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
Strong optical driving can induce transient superconducting-like behavior in materials even above their equilibrium $T_c$. Because many of these systems already exhibit short-range superconducting correlations in equilibrium, an important question is whether periodic driving can enhance coherence in the absence of true long-range order. To investigate this possibility, we study the...
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João Manuel Alendouro Oliveira Pinho (Centro de Física do Porto)9/21/26, 11:45 AMM04 - Non-crystalline quantum matter3) Contributed talk
The nonequilibrium generation of orbital magnetization under applied electric fields is a central problem in the emergent field of orbitronics. However, its theoretical description is challenging due to the ill-defined nature of the position operator under periodic boundary conditions. While the modern theory of orbital magnetization reformulates the problem in the Bloch representation, its...
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Sergey Artyukhin (Quantum Materials Theory, Genova, Italy)9/21/26, 11:45 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching3) Contributed talk
Ferroic orders are widely used to encode information in data storage devices and may provide a beneficial way to circumvent Boltzmann tyranny affecting conventional MOSFET memory [1]. However, information writing involves order parameter switching, facilitated by domain nucleation and motion of domain walls across a disordered material, which leads to energy dissipation. Recently, an...
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Lavinia Paiella9/21/26, 11:50 AMM39 - Next generation gravitational wave observations4) Invited talk
Intermediate-mass black holes (IMBHs), expected to occupy the mass range between stellar-mass and supermassive black holes (approximately 100-10000 solar masses), remain one of the least explored populations of compact objects. Dense star clusters are thought to play a central role in their formation, with stars and stellar-mass black holes acting as the primary building blocks. These...
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Tomáš Bzdušek (University of Zurich)9/21/26, 12:00 PMM04 - Non-crystalline quantum matter3) Contributed talk
Hyperbolic lattices constitute synthetic matter in which sites are more densely interconnected than in ordinary lattices, leading to an effective negative curvature at large length scales. Such systems have in recent years been successfully realized across a range of experimental platforms, including coupled microwave resonators, electric-circuit networks, and silicon photonics. This...
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Alaska Subedi (CNRS)9/21/26, 12:00 PMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
Coherent driving of phonons with intense laser pulses usually does not lower the symmetry of a crystal. It generally causes large oscillations about the equilibrium structure or displaces the lattice along a fully symmetric coordinate. This makes it difficult to use light to reach lower-symmetry structures. I will discuss how nonlinear phononics can overcome this limitation through...
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Ravi Kaushik (Italian Institute of Technology)9/21/26, 12:00 PMM11 - Electron-phonon coupling in correlated quantum matter3) Contributed talk
Ultrafast order melting in magnetic insulators is governed by two processes: intrinsic intra-spin relaxation and spin-lattice energy transfer. Antiferromagnets, which lack net magnetization, can in principle evade angular-momentum constraints and display markedly faster order-parameter dynamics than ferromagnets, but experimental rates vary widely across materials. Here we combine...
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Franco Moitzi (Materials Center Leoben Forschung GmbH)9/21/26, 12:00 PMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Most metallic alloys of technological relevance, such as steels and superalloys, are inherently complex due to the coexistence of chemical disorder and, in many cases, magnetic disorder. This is particularly important in Fe-based systems, where the magnetic state can vary with temperature and composition. Capturing these effects within first-principles approaches remains challenging,...
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Andreas Wiederin (University of Vienna)9/21/26, 12:00 PMM14 - Experimental Studies of Negatively Charged Ions3) Contributed talk
Isobaric interferences have restricted the applicability of Accelerator Mass Spectrometry (AMS) for ultra-trace measurements to certain long-lived radionuclides up to the mid-mass range of fission products or whose isobars do not form negative ions.
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We investigated two methods to extend isobar separation capabilities to the actinides based on the formation of and interactions with negative... -
Kirill Dubovitskii (Inria, Paris)9/21/26, 12:00 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Bogolyubov quasiparticles represent an important sources of errors in superconducting
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qubits. Unlike the quasiparticle contribution to $1/T_1$ qubit relaxation rate, the pure dephasing rate $1/T_\phi$ can not be obtained by the perturbative golden rule calculation due to
the logarithmic divergence of the quasiparticle noise correlator at low frequency (1). For
such noises with a divergent... -
Alessio Recati (Pitaevskii BEC Center, CNR-INO & Università di Trento)9/21/26, 12:15 PMM12 - Recent Developments of the Polaron Theory3) Contributed talk
We study the physics of an impurity confined in a lattice coupled to a Bose-Hubbard bath at zero temperature. Within the Quantum Gutzwiller formalism [1], we develop a beyond-Fröhlich model of the bath-impurity interaction. Results for the properties of the polaronic quasiparticle due to the dressing of the impurity by quantum fluctuations of the bath are presented throughout the entire phase...
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Christian Sprenger (Universität Innsbruck)9/21/26, 12:15 PMM14 - Experimental Studies of Negatively Charged Ions3) Contributed talk
To deepen the understanding of photoexcitation of DNA by ultraviolet radiation, we performed a wavelength dependent photoabsorption study of the anionic deprotonated nucleotide [dAMP-H]$^-$.
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Within the range of our study, between 240\,nm and 270\,nm, we were able to resolve multiple spectral features, that could not be resolved before. This was made possible by our 16-pole radiofrequency... -
Martin Zelený (Faculty of Mechanical Engineering, Brno University of Technology)9/21/26, 12:15 PMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Grain boundaries (GBs) play an important role in polycrystalline magnetic materials because they act as obstacles to magnetic domain wall motion. Therefore, magnetic coercivity, remanence, saturation magnetization, and the Curie temperature are known to depend strongly on grain size. An atomistic description of magnetic interactions requires construction of an effective Heisenberg Hamiltonian...
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Giampiero Marchegiani (Technology Innovation Institute)9/21/26, 12:15 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Bogoliubov quasiparticles are an intrinsic source of errors for superconducting qubits [1]. These excitations harm the qubit coherence in two ways: i) they can exchange energy with the qubit when tunneling across the junction, and ii) dynamically lead to dephasing, for instance during burst events, by reducing the Josephson energy and so the qubit frequency. In qubits with gap-asymmetric...
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Markus Aichhorn (Graz University of Technology)9/21/26, 12:15 PMM11 - Electron-phonon coupling in correlated quantum matter3) Contributed talk
Knowing the transport properties of iron under realistic conditions present in the Earth’s core is essential for the geophysical modeling of Earth’s magnetic field generation. In addition to the effects of extreme pressures and temperatures, which cause dominant scattering due to thermal disorder, transport can also be affected by light elements and electron-electron interactions. Using a...
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Isidora Araya Day (DIPC)9/21/26, 12:15 PMM04 - Non-crystalline quantum matter4) Invited talk
Gyromorphs are a new class of disordered systems that combine an amorphous-like absence of translational order with quasi-long-range rotational order. Gyromorphs can outperform quasicrystals or hyperuniform arrangements in forming isotropic band gaps, suggesting an avenue to realize robust disordered topological phases. However, gyromorphs lack exact rotational symmetry, which is only realized...
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Martyna Chruslinska (ESO)9/21/26, 4:00 PMM39 - Next generation gravitational wave observations4) Invited talk
Gravitational-wave astronomy is entering a new regime: as current detectors improve and the next generation of ground-based facilities comes online, detection rates of stellar-mass compact-object mergers will increase from hundreds to millions per year. The observed merger population will comprise systems formed across cosmic time, originating from stars born with different chemical...
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Prof. Ariando Ariando (National University of Singapore)9/21/26, 4:00 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing4) Invited talk
Magnetism is generally detrimental to superconductivity, but in unconventional systems the two coexist and give rise to exotic phenomena such as spin-triplet pairing and field-induced superconductivity. In the infinite-layer nickelate series SmEuCaNiO2 (SECNO), samples with specific Eu concentrations exhibit field-reentrant superconductivity, which has been attributed to Jaccarino-Peter (JP)...
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Christoph Dellago (Faculty of Physics, University of Vienna)9/21/26, 4:00 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics4) Invited talk
Rare transitions between long-lived states underlie many important processes in condensed matter, from nucleation to protein folding, yet their simulation remains challenging due to the vast separation of timescales involved. In this talk, I will discuss how machine learning can enhance rare event simulations. A central theme is the committor function, the ideal reaction coordinate, which can...
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Andras Szabo (Max Planck Institute for Solid State Research)9/21/26, 4:00 PMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
Symmetry enlargement occurs in correlated systems when two degenerate ordered phases breaking different symmetries combine into a super-order parameter, transforming under an enlarged algebra. While this phenomenon is in principle accompanied by the emergence of new Goldstone modes rotating between microscopically distinct orders, the exploration of such collective excitations is often not...
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Julia Wiktor (Chalmers University of Technology)9/21/26, 4:00 PMM12 - Recent Developments of the Polaron Theory4) Invited talk
Carrier localization plays an important role in determining transport and optical properties of functional materials, particularly in soft and polar semiconductors relevant to optoelectronic and energy applications. However, modeling these localized states in realistic materials is not straightforward, because their formation is closely tied to local symmetry breaking, structural fluctuations,...
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Lukasz Plucinski (Forschungszentrum Juelich GmbH, Juelich, Germany)9/21/26, 4:00 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution4) Invited talk
Spin- and orbital-resolved access to the electronic bands is necessary to establish key properties of quantum materials such as the quantum-geometric tensor. Despite the recent revival of interest in magnetic Kagome compounds, no spectroscopic access to their magnetic properties has been available so far due to small domain sizes and the lack of appropriate techniques. Furthermore, their...
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Emanuel Schneck (TU Darmstadt, Department of Physics, Darmstadt, Germany)9/21/26, 4:00 PMM35 - Lipids, surfactants and polyelectrolytes4) Invited talk
Lipids are the defining building blocks of biological membranes. The mechanical properties of membranes and the formation of functional domains are governed by the lipids’ in-plane organization, which is sensitive to the molecular composition, to the presence of ions, and to other parameters like temperature and pH. Here, we integrate surface-sensitive x-ray scattering techniques with...
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Mohammad Ansari (Forschungszentrum Jülich)9/21/26, 4:00 PMM10 - Mesoscopic superconductivity and quantum circuits4) Invited talk
In this talk I'll present an overview over the modelling quantum circuits trajectory from pairwise interactions era to modern circuit QED analysis that enables simulating many-body interactions in surface-code quantum processor units (QPUs). Combining a concise diagrammatic formalism with high-precision numerical methods, our approach efficiently evaluates high-order, long-range Pauli string...
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Miguel Gonçalves (Princeton Center for Theoretical Science, Princeton University)9/21/26, 4:00 PMM04 - Non-crystalline quantum matter4) Invited talk
We unveil a mechanism for ferromagnetism in quasiperiodic moiré systems hosting a narrow band of localized states. By projecting the full interacting Hamiltonian onto the narrow band, we numerically and analytically determine the stability of the fully polarized ferromagnetic state at half filling of the narrow band against charge and spin-flip excitations, converging the results to the...
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Prof. Michael Sentef (University of Bremen)9/21/26, 4:15 PMM03 - Correlated Materials Out of Equilibrium4) Invited talk
Light-induced superconducting-like responses have been observed in K₃C₆₀ when driving withmid-infrared laser pulses [1], with a pronounced 10 THz resonance reported more recently [2]. Here we address the microscopic origin of this resonance. Using numerical calculations for a realistic model of K₃C₆₀ we simulate the effect of a periodic drive on the strongly correlated system. We discuss a...
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Cecilia Sgalletta (University of Heidelberg)9/21/26, 4:20 PMM39 - Next generation gravitational wave observations3) Contributed talk
The latest LIGO-Virgo-KAGRA observational run has narrowed the local binary black hole merger rate to 14-26 Gpc$^{-3}$ yr$^{-1}$. Despite the increasing number of observations, current state-of-the-art binary population synthesis codes tend to overestimate this rate, revealing a tension between theoretical models and gravitational wave data.
In this talk, I identify and discuss the primary...
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Emanuele Locatelli (University of Padova)9/21/26, 4:30 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Diverse soft matter systems offer the possibility to tune the rheological response by tailoring microscopic interactions; however, brute-forcing the exploration may be either impractical or extremely costly. Here, we present an efficient approach for the exploration of the parameter space of soft matter systems based on the synergistic combination of coarse-grained modeling, Brownian dynamics...
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Markus Miettinen (Department of Chemistry, University of Bergen, Norway)9/21/26, 4:30 PMM35 - Lipids, surfactants and polyelectrolytes4) Invited talk
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Martin Anstett (RPTU Kaiserslautern-Landau)9/21/26, 4:30 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
The integration of organic molecules with ferromagnetic surfaces is a promising approach to advance spintronic applications. Organic molecules provide tuneable electronic and spin-related properties, such as weak spin-orbit coupling and long spin coherence times. The ferromagnetic substrate provides the spin-polarized states necessary for spin injection and detection. The interaction between...
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Marta Gibert (TU Wien)9/21/26, 4:30 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing4) Invited talk
The discovery of superconductivity in doped infinite-layer nickelate thin films has stimulated considerable interest in understanding the role of different dopants. Among these, magnetic rare-earth doping occupies a particularly distinctive position. Eu-doped NdNiO2 gives rise to a striking field-induced re-entrant superconductivity, which emerges from a delicate balance between the competing...
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Raul Liquito (Faculdade de Ciências da Universidade do Porto - Departamento de Física e Astronomia, CF-UM-UP)9/21/26, 4:30 PMM04 - Non-crystalline quantum matter3) Contributed talk
Moiré materials represent one of the richest fields in condensed matter physics, with twisted bilayer graphene (TBG) serving as a prime example. TBG exhibits exotic physical properties, including unconventional superconductivity and delocalized eigenstates in both momentum and real space near the flat-band regime. Recent experiments on hBN/TBG and twisted trilayer graphene (TTG) have uncovered...
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Yuan Gao (Forschungszentrum Jülich PGI-13)9/21/26, 4:30 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
One of the main enablers in quantum computing is having qubit control that is precise and fast. However, qubits typically have multilevel structures making them prone to unwanted transitions from fast gates. This leakage out of the computational subspace is especially detrimental to algorithms as it has been observed to cause long-lived errors, such as in quantum error correction. This forces...
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Stefano Ragni (Institute of Physics, Zagreb, Croatia)9/21/26, 4:30 PMM12 - Recent Developments of the Polaron Theory4) Invited talk
Polaron physics remains central to understanding charge transport in materials with strong electron-phonon coupling, where quasiparticles emerge as electrons dressed by lattice excitations. The Holstein model provides the standard framework for describing small polarons, assuming harmonic phonons and linear coupling. However, this approximation breaks down in materials such as quantum...
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Johannes Anzengruber (University of Graz)9/21/26, 4:40 PMM39 - Next generation gravitational wave observations3) Contributed talk
As with gauge theories in flat-space, physical observables in quantum gravity have to be constructed from gauge invariant correlation functions. An analysis of curvature-curvature correlation functions at time-oriented distances within causal dynamical triangulations, a lattice theory of quantum gravity, shows a behaviour consistent with a massive particle-like state. Hinting at the existence...
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Neill Warrington (MIT)9/21/26, 4:45 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Accurately predicting the properties of many-node superconducting circuits devices from circuit QED is challenging as it requires solving the many-body Schrodinger equation. In this talk I will present a new, general method for solving general circuit QED based on lattice field theory, a tool commonly applied in nuclear and particle physics. This method is competitive with state-of-the-art...
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Max Weinmann9/21/26, 4:45 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Consistent, abstract descriptions of learning dynamics in neural networks are still uncommon, yet such descriptions appear across many scientific fields. Consequently, predicting how dynamics change with different ML model parameters can fail dramatically, and preventing these failures is challenging. Reliable control therefore demands a deep understanding of mechanisms and conditions that...
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David Janas (TU Dortmund)9/21/26, 4:45 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution4) Invited talk
The spin-dependent electronic structure of buried oxide–ferromagnet interfaces governs the performance of magnetic tunnel junctions,[1,2] but remains difficult to access directly with conventional surface-sensitive spectroscopies. Here, we show that spin-resolved momentum microscopy, i.e. spin-resolved ARPES in full-field momentum-imaging mode, can probe the buried MgO/Fe(100) interface and...
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Nicolau Sobrosa9/21/26, 4:45 PMM04 - Non-crystalline quantum matter3) Contributed talk
The emergence of correlated phases, such as unconventional superconductivity, in two-dimensional moiré materials is one of the most fascinating developments in condensed matter physics. However, the interplay between the large-scale moiré patterns, the formation of flat bands, and the subsequent interaction-induced phases poses a significant challenge for numerical simulations. In realistic...
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Dr Alba de las Heras (Max Planck Institute for the Structure and Dynamics of Matter (MPSD))9/21/26, 4:45 PMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
The potential of high harmonic generation (HHG) from chiral topological materials is under investigation. Our time-dependent density-functional theory (TDDFT) calculations in the prototypical chiral Weyl semimetal RhSi show two significant features [1]. On the one hand, a pulse-duration-sensitive cutoff in HHG arises from a progressive promotion of electron population to high conduction bands....
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Ellen Backus9/21/26, 5:00 PMM35 - Lipids, surfactants and polyelectrolytes3) Contributed talk
Thin polymer films based on polymer blends can be used as coatings with tunable properties. Such films can be created with the Langmuir film method: polymers are deposited on water controlling their density by compression, potentially cross-linked to obtain networks, and subsequently transferred onto a solid substrate resulting in stable thin films. As a first step to design such films, the...
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Dr Serghei Klimin (TQC, University of Antwerp, Belgium)9/21/26, 5:00 PMM12 - Recent Developments of the Polaron Theory3) Contributed talk
We develop and compare analytical approaches for the polaron problem in finite-width, non-parabolic conduction bands [1, 2]. Our main result is an extension of the Feynman variational method to tight-binding lattices [1], where the effective-mass approximation breaks down. We also revisit analytical methods originally formulated for continuum polarons, including canonical transformations and...
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Federico Mazzola (University of Padova)9/21/26, 5:00 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution4) Invited talk
For many years, since the beginning of the 19th century, the existence of magnetism in low dimen-sions has been both desired and controversial. It was long thought, that magnetic orders in low di-mensional systems could not be realized at temperatures different from zero. At least, this was what the Mermin-Wagner theorem stated for isolated Heisenberg spins. The scarcity of low-dimensional...
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Rebecca Pons (Max Planck Institute for Solid State Research)9/21/26, 5:00 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
The discovery of superconductivity in infinite-layer nickelates without alkaline-earth doping, as well as in Ruddlesden-Popper nickelates, raises the question of whether these cases are related and whether they are based on a common mechanism. For the infinite-layer nickelates a critical step is the topotactic reduction. We investigate the electronic configurations arising in the reduction...
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Francesco Ferrarin (University of Copenhagen, Niels Bohr Institute)9/21/26, 5:00 PMM39 - Next generation gravitational wave observations4) Invited talk
Recent work has revealed that extremal Kerr black holes may exhibit a sensitivity to higher-derivative corrections to Einstein's equations, displaying singularities in the tidal forces at the horizon. However, in a purely gravitational context, this "ultraviolet sensitivity" translates into a strong dependence on the Wilson coefficients in the low-energy effective field theory. These, in turn,...
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Xuexin Xu (Forschungszentrum Jülich)9/21/26, 5:00 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
The realization of multi-qubit entangling gates is essential for efficient, scalable, and fault-tolerant quantum information processing, reducing algorithmic complexity and circuit depth. We demonstrate a native three-qubit entangling gate implemented by simultaneously driving all qubits at a common frequency, exploiting engineered interactions to realize multi-control operations in a single...
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Alessandro Coretti (University of Vienna)9/21/26, 5:00 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Within the framework of deep learning, generative models are receiving increasing attention due to their ability to generate independent samples starting from a set of training examples. Their application to statistical mechanics is particularly promising, given the difficulty of generating decorrelated samples from complex physical distributions. This has led to a growing line of research in...
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Rok Venturini (Paul Scherrer Institute)9/21/26, 5:00 PMM03 - Correlated Materials Out of Equilibrium3) Contributed talk
Control over the novel quantum states that emerge from non-equilibrium conditions is of both fundamental and technological importance. Metastable charge density wave (CDW) states are particularly interesting as their electrical manipulation could lead to ultra-efficient memory devices. However, using electrical pulses for non-volatile resistance switching involving CDW states has so far been...
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Ricardo Oliveira (Centro de Física das Universidades do Minho e Porto, LaPMET)9/21/26, 5:00 PMM04 - Non-crystalline quantum matter3) Contributed talk
The recent discovery of superconductivity in quasiperiodic twisted trilayer graphene (tTLG) underscores the complex interplay between quasiperiodicity and interactions in moiré materials [1]. Furthermore, previous work by the authors [2] has shown that quasiperiodicity can lead to an enhancement of superconductivity in one-dimensional quasiperiodic models. However, a proper theoretical...
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Stefano Ponzoni (Ecole Polytechnique)9/21/26, 5:15 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
Layered Ruddlesden–Popper halide perovskites are an attractive platform for investigating excited-state many-body physics, since quantum and dielectric confinement, strong spin–orbit coupling, and pronounced lattice dynamics can coexist and interplay in this material family.
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Here, we present angle-resolved and time-resolved photoelectron spectroscopy measurements on single crystals of... -
Matthew Houtput (University of Antwerp)9/21/26, 5:15 PMM12 - Recent Developments of the Polaron Theory3) Contributed talk
Electron-phonon interactions are often written using the approximation of linear interaction, where one only keeps the process where one electron interacts with one phonon. This is usually sufficient to quantitatively describe material properties. However, this is no longer true in anharmonic materials with significant electron-phonon interaction, such as quantum paraelectrics and halide...
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Patrick Egenlauf9/21/26, 5:15 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Describing out-of-equilibrium quantum many-body dynamics remains a central challenge in condensed matter physics. While the time-dependent two-particle reduced density matrix (TD2RDM) formalism avoids the exponential scaling of exact wave-function methods, it requires closing the BBGKY hierarchy by reconstructing the three-particle cumulant. However, the validity of time-local reconstruction...
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Jure Derganc (Institute of Biophysics, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia)9/21/26, 5:15 PMM35 - Lipids, surfactants and polyelectrolytes3) Contributed talk
Necrosis- and ethylene-inducing peptide 1-like proteins (NLPs) are a large family of microbial toxins secreted by taxonomically diverse pathogens—including bacteria, fungi, and oomycetes—that infect a wide range of crops such as potato, tomato, soybean, and grapevine. These pathogens significantly burden global agriculture. A sad example is Phytophthora infestans, an NLP-producing oomycete...
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Balázs Hetényi (Budapest University of Technology and Economics)9/21/26, 5:15 PMM04 - Non-crystalline quantum matter3) Contributed talk
One of the most frequently cited experimental results in condensed matter physics are those of the quantum Hall effect. These results show peaks in the Hall conductance as a function of magnetic flux at rational numbers of elementary flux units, implying that the experiment distinguishes between rational and irrational flux. In this talk I will present results for the Aubry-André model, a...
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Luca Chirolli (Department of Physics and Astronomy, University of Florence)9/21/26, 5:15 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
We propose a generalized fluxonium circuit hosting $d$ low-lying energy levels, well separated from the rest of the spectrum and that naturally realize a qudit system protected from leakage errors. The low-energy states are constituted by fractional fluxon states, localized in the minima of a suitably designed Josephson potential and weakly hybridized by quantum phase slip processes. The...
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Hanghui Chen (NYU Shanghai and New York University)9/21/26, 5:15 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Spin fluctuations are widely believed to mediate electron pairing in unconventional superconductors. In gap-equation calculations, the random phase approximation (RPA) has been extensively used to construct the spin-fluctuation pairing potential that arises from Hubbard-like interactions. However, RPA is formally valid only in the weak-coupling regime and tends to predict spin-density-wave...
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Leonard Verhoff (TU Wien)9/21/26, 5:30 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Infinite-layer nickelates, such as NdNiO$_2$, are a compelling platform to explore the microscopic origin of unconventional high-temperature superconductivity, from both theoretical and experimental perspectives.
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Experimentally, infinite-layer nickelates are reduced from the stable
perovskite phase, leaving an empty apical oxygen site. Density functional theory (DFT) calculations show that... -
Annica Black-Schaffer (Uppsala University)9/21/26, 5:30 PMM04 - Non-crystalline quantum matter4) Invited talk
Quantum geometry provides a unifying framework to describe wave-function structure. In this talk, I introduce the quantum metric as a natural tool to characterize non-crystalline quantum matter, as it captures both impurity correlations and localization.
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In graphene with vacancy disorder, where defect states form a zero-energy impurity band with multifractal character, a spatially resolved... -
Ben Blain (Technology Innovation Institute)9/21/26, 5:30 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Superconducting qubits are artificial atoms whose spectra and interactions can be engineered through appropriate circuit design, a versatility that can be exploited for quantum simulation. We theoretically investigate a linear array of capacitively coupled transmons, effectively described by a Bose-Hubbard Hamiltonian with attractive interaction. We revisit the discrete-soliton nature of the...
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Dr Lukasz Stepien (University of the National Education Commission, Krakow)9/21/26, 5:30 PMM12 - Recent Developments of the Polaron Theory3) Contributed talk
In [1-5] has been investigated a relativistic relation between the Josephson energy and the transport current has been verified. This was further generalized in [6], by including the influence of external charges associated with Wannier-type semiconductor qubits coupled to a Josephson junction. The resulting modification of the Andreev bound states reflects the coupling between the...
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Florian Trummer (Universität Stuttgart, Institut für Physikalische Chemie)9/21/26, 5:30 PMM35 - Lipids, surfactants and polyelectrolytes3) Contributed talk
In recent years, biosurfactants have been sparking increasing interest in both, academic research and industry, as an alternative to conventional, petrochemical-derived surfactants. From an application point of view, the use of biosurfactants allows for more biocompatible formulations that are also less harmful to the environment, due to a lower $\mathrm{CO_2}$ footprint in production and...
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Pierre Nonnon (CY Cergy Paris Université, CEA, LIDYL, 91191, Gif-sur-Yvette, France)9/21/26, 5:30 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
We present Spin, Time-, and Angle-Resolved Photoemission Spectroscopy (STARPES) measurements of photoexcited free carriers in centrosymmetric bulk 2H-WSe2. This setup combines a high harmonic generation (HHG) source with tunable repetition rate, pulse duration, photon energy, and polarization, and a hemispherical analyzer with a 3D VLEED spin detector.
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The electron spin polarization dynamics... -
Gian Parusa (Paul Scherrer Institute)9/21/26, 5:45 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
Angle-resolved photoemission spectroscopy (ARPES) is a powerful probe of electronic structure, where the measured intensity is governed by the product of the single-particle spectral function and the photoemission matrix element. While the spectral function encodes intrinsic many-body electronic properties, the matrix element introduces strong modulations as a function of photon energy,...
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Konrad Weber9/21/26, 5:45 PMM35 - Lipids, surfactants and polyelectrolytes3) Contributed talk
Fluid lipid monolayers at the air/water interface provide a uniquely controllable model system for probing the molecular interactions that govern biological membrane organization. In cellular membranes, the chemical identity of lipid headgroups and the presence of sterols such as cholesterol critically shape lateral packing, domain formation, and the dynamic balance between order and fluidity....
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Meenakshi Sharma (Max Planck Institute for Chemical Physics of Solids, Dresden)9/21/26, 5:45 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Ultrathin superconducting films have become the material of choice for compact, high-impedance microwave elements such as superinductors and kinetic-inductance detectors [1,2,4], because reduced dimensionality and disorder strongly enhance the kinetic inductance. Yet the same ingredients that boost it reshape the condensate itself: this property is set by the superfluid stiffness Θ, so...
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Roman Drachynskyi (Uniwersytet Jagielloński)9/21/26, 5:45 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
We investigate magnetism in the electron-doped infinite-layer nickelate NdNiO$_2$ within a multi-orbital tight-binding framework including both Ni and Nd states. The model captures the self-doping effect arising from charge transfer into Nd bands. For realistic parameters, we find that undoped NdNiO$_2$ lies just outside the antiferromagnetic (AFM) region of the phase diagram, consistent...
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Noah Stiehm (TU Ilmenau, Technische Physik 1)9/22/26, 10:30 AMM16 - Advances in Ultrafast Time-Resolved Ellipsometry4) Invited talk
Pump-probe ellipsometry has the ability to capture many essential aspects of a material's excited states and their dynamics, e.g. relaxation, recombination and scattering rates, carrier temperatures, bandgap renormalization, and band-filling effects. Quantitative analyses of selected of these aspects are carried out in the community with increasing success. With access to electronic structure...
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Søren Raza (Technical University of Denmark)9/22/26, 10:30 AMM17 - Emerging trends in dielectric nanophotonics4) Invited talk
The discovery of new high-refractive-index dielectric materials is essential for advancing optical nanotechnologies, including metasurfaces, nanoantennas, and photonic devices operating across the visible and ultraviolet spectra [1]. While traditional materials like silicon and gallium phosphide have enabled much of the progress in all-dielectric nanophotonics, expanding the palette of...
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Maxim Mostovoy (Zernike Institute for Advanced Materials, University of Groningen)9/22/26, 10:30 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching4) Invited talk
Low-energy dynamics of magnetic topological defects are governed by collective modes, e.g., center-of-mass coordinates and helicity of skyrmions, as well as the local excitations of the defects with energies below the magnon continuum. The coupling between these modes makes it possible to excite complex, large-amplitude dynamics by periodically oscillating electromagnetic fields and electrical...
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Matous Mrovec (ICAMS, Ruhr-Universität Bochum)9/22/26, 10:30 AMM23 - Ab initio modeling and machine learning of crystal defects4) Invited talk
The emergence of foundational machine learning interatomic potentials (MLIPs) represents a transformative shift in atomistic materials simulations. These models aim to provide a scalable bridge between the predictive accuracy of first-principles methods and the temporal and spatial scales required for complex molecular dynamics simulations. Unlike traditional "bespoke" potentials tailored to...
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Prof. Vladimir M. Fomin (Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Germany; Moldova State University, Chişinău, Republic of Moldova)9/22/26, 10:30 AMM09 - Magnetism and superconductivity in nanoscale 3D architectures4) Invited talk
State-of-the art fabrication techniques allow for creation of topologically non-trivial and geometrically complex nanostructures ranging from quantum rings to 3D nanoarchitectures. Quantum rings are a special class of high-tech nanostructures, which provide a unique playground for the quantum-mechanical paradigm and topological physics [1]. Models of magnetoresistance oscillations in...
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Samuel Deléglise (CNRS)9/22/26, 10:30 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems4) Invited talk
MHz-frequency mechanical resonators are powerful platforms for quantum technologies and tests of fundamental physics, yet efficient control remains challenging due to their low energy scales and the difficulty of coupling them to well-controlled quantum systems at matching frequencies. Here we demonstrate high-fidelity, repeated interactions between a 4-MHz suspended silicon nitride membrane...
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E. Bascones (Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC))9/22/26, 10:30 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Signatures of heavy and light electrons in Magic Angle Twisted Bilayer Graphene
The topological character of the flat bands of twisted bilayer graphene (TBG) underlies the plethora of correlated phenomena found as a function of doping and temperature. Particularly, it determines the unconventional reorganization of the electronic spectrum, observed in the electronic cascades and detected...
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Francesco Giuseppe Capone (Dipartimento di Fisica "Ettore Pancini", Università degli Studi di Napoli Federico II - INFN, sezione di Napoli)9/22/26, 10:30 AMM10 - Mesoscopic superconductivity and quantum circuits4) Invited talk
The Schmid transition represents a fundamental insulator-to-superconductor phase transition occurring in the resistively shunted Josephson junction (RSJJ). The system is modeled as a parallel circuit with a non-linear inductor (Josephson energy $E_J$), a capacitor (charging energy $E_C = 4e^2/2C$), and a shunt resistor $R_S$. Initially, Schmid and Bulgadaev [1,2] predicted this transition at...
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F. Stefan Tautz (Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany)9/22/26, 10:30 AMM19 - Time-resolved photoemission orbital tomography4) Invited talk
During the last 15 years, a new variant of angle-resolved photoemission spectroscopy (ARPES) has been established: photoemission orbital tomography (POT). With POT, the wave functions of a molecule's individual electronic eigenstates (the orbitals) can be reconstructed in three-dimensional space, purely on the basis of experimental data. POT thus allows us to "observe the...
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Toyoda Shingo9/22/26, 11:00 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching4) Invited talk
All-optical control of magnetism is key to realizing next-generation opto-spintronic devices that integrate the speed of photonics with the memory functionality of magnetism. In particular, optical control of antiferromagnets is attractive due to their inherently fast spin dynamics and robustness against external perturbations. However, their optical detection and control remain elusive,...
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Patrick Steger (Department of Physics, Lancaster University, Lancaster LA14YB, United Kingdom)9/22/26, 11:00 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Carbon nanotube (CNT) nanoelectromechanical systems are very sensitive to adsorbed mass and external forces, but accurate readout of CNT vibrational motion is essential for these applications. Conveniently, at cryogenic temperatures a suspended CNT single-electron transistor can self-detect its motion, since the conductance depends on the nanotube’s displacement. However, the ultimate...
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Dr Arindam Pramanik (AGH University of Krakow)9/22/26, 11:00 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
Recent experiments in twisted bilayer MoTe2 (t-MoTe2) have uncovered many correlation-driven phases at various hole filling factors. The phases like fractional Chern Insulator, quantum anomalous Hall phase, superconducting states, and generalized Wigner crystal phase have been confirmed by multiple experimental studies. The majority of these phases are observed at either integer fillings or...
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Zlata Fedorova (Friedrich-Schiller-Universität Jena)9/22/26, 11:00 AMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
Atomically thin transition metal dichalcogenides (TMDs) provide a unique excitonic platform for dielectric nanophotonics, combining strong light–matter interaction, pronounced nonlinearities, and internal valley degrees of freedom with inherent compatibility for planar integration. In this talk, we present recent advances in hybrid systems that integrate TMD monolayers with high-index...
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Tommaso Pirozzi (Università degli studi di Napoli Federico II)9/22/26, 11:00 AMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
The non-equilibrium response of many-body quantum systems to time-dependent driving remains a central frontier in modern physics, with profound implications for quantum simulator architectures such as superconducting circuits. A primary challenge in these platforms is the preparation of highly correlated states through quantum phase transitions (QPTs), where the unavoidable critical slowing...
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Mateusz Rebarz (ELI Beamlines Facility, The Extreme Light Infrastructure ERIC)9/22/26, 11:00 AMM16 - Advances in Ultrafast Time-Resolved Ellipsometry4) Invited talk
Phase-change materials (PCM) can undergo fast and reversible changes between crystalline and amorphous phases what makes them great candidates for many reconfigurable photonic devices. A thorough understanding of processes affecting local and temporal optical constants of PCMs provides the knowledge of technological limitations of these materials and their applicability. The changes in optical...
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Christoph Dösinger (Montanuniversität Leoben)9/22/26, 11:00 AMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Both vacancies and grain-boundaries (GB) are important defects in materials. The vacancies can interact with the GBs which might lead to a formation of voids, as a result this might start the formation of pores or cracks. From atomistic simulations it is known, that vacancies can be attracted to GBs, which indeed may act as sinks for the vacancies. In this work we use ab-initio methods to...
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Mr Marcel Theilen (Universität Regensburg, Philipps-Universität Marburg)9/22/26, 11:00 AMM19 - Time-resolved photoemission orbital tomography3) Contributed talk
Photoemission orbital tomography (POT) is a powerful technique, by which the electron distribution of orbitals of well-ordered molecules at solid surfaces can be imaged in momentum space [1]. Recently, we combined the method with laser pump-probe techniques to investigate the dynamics of charge transfer processes at molecular interfaces [2,3]. In this talk I will discuss how time-resolved POT...
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Andreas Costa (University of Regensburg, Germany)9/22/26, 11:00 AMM09 - Magnetism and superconductivity in nanoscale 3D architectures3) Contributed talk
First-principles calculations have recently predicted that chiral materials lacking mirror symmetries---such as twisted van-der-Waals homobilayers---can feature unconventional radial Rashba coupling with spins aligned fully parallel (instead of tangentially) to momentum.
In this talk, we will address Josephson transport through vertical superconductor/ferromagnet/superconductor junctions...
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Omid Reza Ranjbar Naeini (Marie Skłodowska-Curie Postdoctoral Fellow,INL International Iberian Nanotechnology Laboratory, Braga, Portugal)9/22/26, 11:15 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Nonlinear mode coupling in micro- and nanoelectromechanical systems (MEMS and NEMS) has been studied extensively because these platforms combine compact size, batch-fabrication compatibility, high reliability, and low power consumption with rich dynamical behavior. In particular, coupled resonators can exhibit energy exchange between interacting modes or neighboring resonators through linear...
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Lorenz Huber (University of Graz, Insitute of Physics, Graz, Austria)9/22/26, 11:15 AMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
Plasmonics enables light confinement at the nanoscale, leading to strong field enhancements (1). When dealing with sharp particle features, gaps, or field variations on the nanometer scale, quantum surface effects become significant. Conventional Maxwell descriptions of these systems can lead to inaccurate results under such extreme situations.
Recently, it has been suggested to account...
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Wiebke Bennecke (Georg-August-Universität Göttingen)9/22/26, 11:15 AMM19 - Time-resolved photoemission orbital tomography4) Invited talk
Excitons are realizations of a correlated many-body wavefunction, consisting of a Coulomb-bound electron-hole pair. They are the dominant excitations in semiconducting organic and low-dimensional quantum materials and, thus, govern their optoelectronic response. To unlock the full optoelectronic potential and to control exciton-mediated energy conversion pathways, a microscopic understanding...
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Dr Rosa Córdoba (Institute of Molecular Science (ICMol), University of Valencia, Paterna, Spain)9/22/26, 11:15 AMM09 - Magnetism and superconductivity in nanoscale 3D architectures3) Contributed talk
Superconducting nanostructures are attractive building blocks for future quantum and nanoelectronic technologies because they combine dissipationless transport, macroscopic quantum coherence, and strong sensitivity to geometry and dimensionality. In particular, extending superconductivity from planar systems to three-dimensional (3D) nanoscale architectures creates new opportunities to tailor...
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Qimiao Si (Rice University)9/22/26, 11:15 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Quantum materials research is experiencing major advances in both depth and breadth [1]. Flat bands, in particular, emerge in a diverse range of materials, spanning twisted heterostructures and compounds with geometrically frustrated lattices. They feature strong correlation effect alongside non-trivial topology. Recent experiments on active-flat-band kagome and pyrochlore metals have...
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Ms Mirjam Neubauer9/22/26, 11:15 AMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Prototypical Color Centers in semiconductors, such as the $\mathrm{NV^-}$-center in diamond, the Silicon vacancy ($\mathrm{V_{Si}^-}$) and the di-vacancy ($\mathrm{V_{C}V_{Si}}$) in 4H-Silicon carbide (4H-SiC) are promising candidates for the implementation of quantum bits (qubits) in semiconductors. Their coupled electron spins exhibit correlated high- and low-spin states, enabling...
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Fabio Taddei (NEST, Istituto Nanoscienze-CNR)9/22/26, 11:15 AMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Stability–efficiency trade-offs in nonequilibrium transport are constrained by thermodynamic uncertainty relations (TURs), which bound current fluctuations in terms of entropy production. In hybrid normal–superconducting (N–S) devices, however, the status of quantum TURs has remained unclear. Here we investigate Andreev-mediated transport and fluctuations in N–S junctions and quantum-dot...
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Mr JORGE OLMOS (UAM)9/22/26, 11:30 AMM17 - Emerging trends in dielectric nanophotonics4) Invited talk
Chiral objects typically exhibit a different extinction for the two circular polarizations of light. Researchers often detect the chirality of objects by measuring this extinction difference employing Circular Dichroism (CD) spectroscopy. In this talk, we present a new spectroscopy technique for detecting the chirality of spherical objects based on measuring the Stokes parameters at any...
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Daniil Khodachenko (Christian Doppler Laboratory DMDG-MAE, Materials Center Leoben Research GmbH)9/22/26, 11:30 AMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Unique electromagnetic properties of steels with silicon and aluminum make them an excellent choice for the production of transformers and electric motors. These so-called electrical steels have enhanced energy efficiency due to reduced core losses and enhanced magnetic permeability. However, increasing the concentration of silicon and aluminum beyond a critical amount leads to significantly...
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Sabri Koraltan (Institute of Applied Physics, Technische Universität Wien)9/22/26, 11:30 AMM09 - Magnetism and superconductivity in nanoscale 3D architectures4) Invited talk
The extension of nanomagnetism into three dimensions and curvilinear geometries opens new frontiers for spintronic applications, offering additional degrees of freedom beyond conventional planar thin films [1]. This talk presents recent advances in understanding and controlling topological magnetic states such as skyrmions and vortices on curved surfaces.
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In the first part of my talk, I will... -
Maksim Ryzhkov (TU Wien)9/22/26, 11:30 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching3) Contributed talk
Recent advances in multiferroic materials offer promising prospects for next-generation memory and data-processing devices. Previous studies [1,2] have shown that rare-earth manganates RMn₂O₅, particularly with R = Gd, are strong candidates for storage applications due to their topologically protected four-state magnetoelectric switching and the efficient electric-field control of this...
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Kurt Hingerl (Johannes Kepler Universität Linz)9/22/26, 11:30 AMM16 - Advances in Ultrafast Time-Resolved Ellipsometry3) Contributed talk
Silicon has three optical phonons, which remain inaccessible with linear
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optical techniques. Here we demonstrate that time-resolved pump-probe spectroscopic ellipsometry enables the detection of optical phonon responses at both the Brillouin zone center and -edge. Using pump pulses with photon energies below the indirect bandgap of silicon, we leverage two-photon absorption to induce... -
Nicola Cavalleri (TU Wien)9/22/26, 11:30 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Silicon Nitride resonators, due to dissipation dilution and soft clamping, are promising platforms for quantum sensing - even at room temperature. The extremely high $Q \times f$ product allows several coherent oscillations, and by coupling with a cavity they can become fully quantum objects with low phonon occupancy. Given the extremely high aspect ratio used in modern mechanical resonators,...
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Francesca D'Esposito (NEEL INSTITUT CNRS)9/22/26, 11:30 AMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Institut Néel, University Grenoble Alpes, CNRS, Grenoble INP, Grenoble, France
Gleb Wataghin Institute of Physic, State University of Campinas, Campinas, SP-Brazil
Départ. des accélérateurs, de la cryogénie et du magnétisme, Université Paris-Saclay-CEA, FranceSuperconducting qubit performance is fundamentally limited by decoherence mechanisms, notably dielectric losses. In this work, we...
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Lorenz Romaner (Montanuniversität Leoben)9/22/26, 11:45 AMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Silicon carbide (SiC) is a wide-band semiconductor with exceptional properties for applications in power electronics. It outperforms Si as a semiconductor in terms of electric breakdown field, saturation carrier velocities and thermal conductivities. Especially the latter makes SiC also more attractive compared to other wide band semiconductors such as GaN. In general, crystal defects play a...
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Elke Scheer9/22/26, 11:45 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
In this presentation I will address the possibility to generate an acoustic frequency comb by self-induced parametric coupling of flexural modes in a micron-scale membrane resonator. We detect the flexural modes using an inductive detection scheme [1]. The frequency comb arises as the result of the formation of a limit cycle (LC) following a Hopf bifurcation. We employ a novel pump-noisy-probe...
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Thomas Reisinger (Karlsruhe Institute of Technology)9/22/26, 11:45 AMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Superconducting circuits are a promising platform for fault-tolerant quantum computing, quantum-limited amplification, ultra-low-power electronics, and sensors with ultimate sensitivity. Reducing loss and fabrication complexity in these circuits is therefore of significant interest.
Superinductors — superconducting inductors with impedances exceeding the resistance quantum — enable the...
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Pietro Diona (Scuola Normale Superiore di Pisa)9/22/26, 11:45 AMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching3) Contributed talk
Domain walls in ferrimagnets and antiferromagnets behave as relativistic sine-Gordon solitons with the spin-wave group velocity setting the ultimate velocity of domain walls and speed of magnetic devices. While this relativistic regime has been achieved in crystalline ferrimagnets, they cannot be routinely integrated in devices. To enable technological breakthroughs, relativistic dynamics must...
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Jakob Helml (RUN Regensburg center for ultrafast nanoscopy)9/22/26, 11:45 AMM19 - Time-resolved photoemission orbital tomography3) Contributed talk
Angle-resolved photoelectron spectroscopy with subcycle temporal resolution has emerged as a powerful technique for visualizing ultrafast carrier dynamics in the band structure of crystalline solids [1,2]. Yet, low probe photon energies limited these experiments to one-dimensional cuts through the center of the Brillouin zone. For orbital reconstruction via photoemission orbital tomography...
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Manuela Schiek (JKU Linz, Austria & PTB Braunschweig, Germany)9/22/26, 11:45 AMM16 - Advances in Ultrafast Time-Resolved Ellipsometry3) Contributed talk
Using ultrafast spectroscopic ellipsometry, we aim to determine the transient dielectric function on a sub-picosecond timescale of organic and inorganic semiconducting thin films. We pick two thin film sample systems that differ in their electronic signature, namely bound excitons versus free Drude electrons: an organic semiconductor type consisting of solution-processed anilino squaraine dyes...
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Mr Chethan Sanjeevappa (Department of Physics, Loughborough University)9/22/26, 11:45 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
High-order Van Hove singularities significantly enhance correlation effects due to their strongly divergent density of states, thereby providing natural platforms for interaction driven instabilities. In this work, we focus on a single fourfold-symmetric high-order Van Hove singularity of X_9 type situated close to the Fermi surface. We analyse the possibility of a superconducting state in the...
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David Perkins (Loughborough University)9/22/26, 12:00 PMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
Twisting in van der Waals heterostructures has proven itself as indispensable in engineering new technologies with bespoke properties, from the tuning of proximity effects and spin transport to the enabling of superconductivity and non-trivial topology [1-4]. Twisted bilayer graphene has been the forerunner in our exploration of twistronics, but twisting in non-honeycomb systems has now...
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Margherita Parodi (Italian Institute of Technology, Genova, Italy)9/22/26, 12:00 PMM28 - Ultrafast and Topological Mechanisms of Ferroic Switching3) Contributed talk
Noncollinear spin textures may break inversion symmetry and induce ferroelectric polarization, giving rise to multiferroicity. Here we study the most basic noncollinear spin texture: a domain wall in a collinear (anti)ferromagnet. The spin chirality of the domain wall is analogous to that in spiral multiferroics and likewise leads to ferroelectric polarization. Here we find that oscillating...
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Oleg Peil (Materials Center Leoben Forschung GmbH, Leoben, Austria)9/22/26, 12:00 PMM23 - Ab initio modeling and machine learning of crystal defects3) Contributed talk
Description of disordered alloys from first principles has always been a challenge. The rise of machine learning (ML) methods has opened new opportunities in this endeavor, but thus far, most of data-driven approaches treat alloys as yet another atomistic system, disregarding important properties of solid solutions, such as homogeneity and translational invariance on average. At the same time,...
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Diana Shakirova (Institute of Physics, University of Graz, and NAWI Graz, Graz, 8010, Austria)9/22/26, 12:00 PMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
Identifying the handedness of chiral molecules is of fundamental importance in chemistry, biology,pharmacy, and medicine. In this work, we predict the chiroptical response of a dielectric metasurface engineered to amplify molecular circular dichroism (CD) using a general electromagnetic theory of chiral light-matter interaction in arbitrary resonators. The idea behind this theory is the...
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Dr Le Zhao (TU Wien)9/22/26, 12:00 PMM09 - Magnetism and superconductivity in nanoscale 3D architectures3) Contributed talk
Three-dimensional (3D) magnetic nanostructures provide a versatile platform for exploring magnetization processes governed by geometry and topology beyond planar systems [1-3]. In particular, spiral nanowires represent a typical system in which curvature and local structural variations can strongly influence magnetic domain wall nucleation and dynamics [4-5].
In this work, we investigate...
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Christian Kern (Institute of Physics, University of Graz)9/22/26, 12:00 PMM19 - Time-resolved photoemission orbital tomography3) Contributed talk
Non-equlibrium Greens function (NEGF) methods provide very powerful tools to simulate time-resolved photoemission spectroscopy [1], including the strong-field regime or experimental conditions where pump and probe pulses overlap in time. In the past, most applications of NEGF for tr-ARPES have concentrated on calculating the spectral function only, and have thus neglected effects of the probe...
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Mitchell Field (Karlsruhe Institute of Technology (IQMT))9/22/26, 12:00 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Over the last 10 years, granular aluminium has risen as a popular material for implementation in superconducting circuits thanks to its high kinetic inductance, low loss with approachable fabrication.
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Where granular aluminium really shines is as the nonlinear element for parametric amplification, showing both magnetic field resilience, robustness for multi pumping schemes with a compact... -
Janine Franz (Université de Bordeaux, CNRS, LOMA, UMR 5798, Talence France)9/22/26, 12:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
The ultrastrong coupling regime of the quantum Rabi model has become increasingly accessible in recent years.
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A particularly promising platform is provided by nanomechanical systems coupled to charge degrees of freedom.
In this work, we consider a quantum mechanical oscillator strongly coupled to a double quantum dot in a regime where the bare energy scales are highly detuned, while the... -
Naëmi Leo (Loughborough University)9/22/26, 12:15 PMM09 - Magnetism and superconductivity in nanoscale 3D architectures3) Contributed talk
Bloch points are three-dimensional singularities in magnetization that play a key role in topological transformations of spin textures. Using a geometrical approach, here we demonstrate deterministic control of the internal magnetic structure of Bloch point. This is achieved by creating a chirality interface between two three-dimensional double-helix nanowires of opposite helicity, which form...
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Alexander Antonov ((1) Ludwig-Maximilians-Universität München)9/22/26, 12:15 PMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
We demonstrate how in-plane material anisotropy reshapes the topology of photonic quasi-bound states in the continuum (qBICs) in a metasurface, enabling control over the formation of extended far-field photonic and polaritonic flatbands [1].
Starting from an isotropic metasurface with rotational symmetry - ensuring double degeneracy of the qBIC - we show, within the resonant-state expansion...
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Claudia Draxl (HU Berlin)9/22/26, 4:00 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution4) Invited talk
Many-body perturbation theory allows us to describe on the same footing the interplay between competing interactions of similar strength and on the same energy scale, which can give rise to exciting phenomena. In this talk, I will highlight the role of electron-electron interaction, electron-vibrational coupling, and electron-hole correlation to understand electronic excitations in different...
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Gianluca Rastelli (Pitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Università di Trento)9/22/26, 4:00 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
The rapid advancement of quantum electronics and microwave photonics is driven by the native operation of superconducting qubits, spin qubits, and hybrid solid-state quantum devices in the microwave regime. This makes microwave photonics a powerful platform for their precise control and manipulation, while superconducting-circuit-based quantum microwave photonics opens new avenues for...
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Daniel Braithwaite (Univ. Grenoble Alpes, Grenoble INP, CEA, IRIG-Pheliqs, F-38000 Grenoble, France)9/22/26, 4:00 PM1M02 - Heavy quasiparticles in heavy fermion compounds4) Invited talk
Superconductivity in UTe2 has many striking properties, like extremely high and anisotropic critical fields and the existence of multiple superconducting phases induced by either pressure or magnetic field. However perhaps the most unusual feature is the reinforcement of superconductivity in applied magnetic fields. The usual effect of magnetic field on superconductivity is through the effect...
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Meng Wang (Sun Yat-Sen University)9/22/26, 4:00 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing4) Invited talk
The recent discovery of high-temperature superconductivity at 80 K in La3Ni2O7 under high pressure has established nickelates as a new family of high-Tc superconductors, alongside the cuprates and iron-based systems[1-4]. This breakthrough has since been extended to other Ruddlesden-Popper nickelates under pressure and in thin-film form at ambient pressure. Our research group, working in...
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Albert Schliesser9/22/26, 4:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems4) Invited talk
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Sabine Andergassen (TU Wien)9/22/26, 4:00 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics4) Invited talk
We explore the ability of machine learning models to extract information encoded in the two-particle vertex Γ that generalizes across different quantum phases. To steer the model away from relying on global phase-specific patterns we employ a sub-sampling strategy that encourages the model to learn general features tied to the phase specific competition between kinetic energy and Coulomb...
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Patrick Huber (Hamburg University of Technology and Deutsches Elektronen-Synchrotron DESY)9/22/26, 4:00 PMM34 - Soft meets hard – interfaces and interactions4) Invited talk
The exquisite diversity and functionality of biological materials is truly remarkable, especially since they are composed of a small set of abundant chemical elements. While engineering materials primarily require specific, often unsustainable, chemical compositions to realize their functions, nature achieves unparalleled functionality through optimized architectures that span multiple length...
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Thomas Klar (Johannes Kepler Universität)9/22/26, 4:00 PMM17 - Emerging trends in dielectric nanophotonics4) Invited talk
Stimulated emission depletion (STED) broke the diffraction limit of resolution in fluorescence microscopy and it has been proposed that STED should be equally applicable to spatially control chemical reactions at the nanometre scale.1 Meanwhile, this prediction has been experimentally realized using free radical polymerization of mostly (meth)acrylates.2-4 Using transient-state absorption...
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Annica Black-Schaffer (Uppsala University)9/22/26, 4:00 PMM08 - Superconducting altermagnets - fundamentals and devices4) Invited talk
Magnetism and superconductivity are two of the most prominent quantum phases of matter, typically exhibiting a competing, “friend–foe” relationship. Their interplay in altermagnets, however, opens a route to qualitatively new phenomena.
In this talk, I will present several effects that arise when superconductivity emerges in altermagnetic systems, including finite-momentum pairing,...
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Tomas Ramos (IFF-CSIC Madrid)9/22/26, 4:15 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Directional amplification is a critical requirement for scalable superconducting quantum computing, yet current solutions rely on bulky, off-chip ferrite isolators that hinder integration. Here we propose a fully on-chip, directional and broadband superconducting quantum amplifier whose isolation arises intrinsically from topological properties. The setup consists of a Josephson junction array...
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Peter Puschnig (University of Graz)9/22/26, 4:30 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
Circular dichroism in the angular distribution (CDAD) is the effect that the angular intensity distribution of photoemitted electrons depends on the handedness of the incident circularly polarized light. CDAD has been reported also for achiral organic molecules at the interface to metallic substrates. For this latter case, we investigate two prototypical pi-conjugated molecules, namely...
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Honey Boban (Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland)9/22/26, 4:30 PM1M06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Monolayer TaIrTe₄ is theoretically predicted to be a quantum spin Hall insulator [1]. A recent transport study on monolayer TaIrTe4 has confirmed the insulating state at zero doping and reported edge conduction, consistent with a topological insulating state [2]. Intriguingly, a second insulating state with comparable edge conduction was found in gated samples where the chemical potential lies...
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Florian Benedetti (Institute of Colloid and Biointerface Science, BOKU University, Vienna, Austria)9/22/26, 4:30 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Forces between colloidal particles cannot generally be measured directly while they contribute to particle movements and ultimately drive self-assembly. We develop methods to infer the forcefield in colloidal systems from experimentally accessible trajectories. According to the Overdamped Langevin Equation (OLE) [1-2], colloidal motion is the sum of two terms: a deterministic motion caused by...
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772. Dynamical Phase Transitions Across Slow and Fast Regimes in a Two-Tone Driven Duffing ResonatorSoumya Kumar (Department of Physics, University of Konstanz, 78464 Konstanz, Germany)9/22/26, 4:30 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
The response of nonlinear resonators to multifrequency driving reveals rich dynamics beyond conventional single-tone theory. We study a Duffing resonator under bichromatic excitation and identify a competition between the two drives, governed by their detuning and relative amplitudes. In the slow-beating regime, where the tones are closely spaced, the secondary tone acts as a modulation that...
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Mr Alessandro Irace (Fondazione Bruno Kessler / Università Bicocca)9/22/26, 4:30 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Superconducting microwave circuits provide a versatile platform for exploring both fundamental topological physics and the frontiers of quantum metrology. In this talk, we present two advancements based on the coherent manipulation of frequency modes in planar tunable resonators. ...
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Ilya Eremin9/22/26, 4:30 PMM08 - Superconducting altermagnets - fundamentals and devices3) Contributed talk
Altermagnets are collinearly ordered magnets, that break time-reversal symmetry, with a zero magnetization, and a spin-split band structure. By employing the minimal tight-binding Hubbard-like model within mean-field and rotationally invariant slave boson (RISB) approximation we explore the effect of uniaxial strain and electronic correlations on altermagnetism in mono- and bilayer systems. ...
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Elias Fösleitner (University of Graz)9/22/26, 4:30 PMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
The scattering matrix, which connects the incoming and outgoing waves of a scatterer, plays a central role in describing light-matter interaction and its pole expansion provides a powerful framework for replacing full-wave simulations with resonance-based models. In this work, we investigate the analytic continuation of the optical scattering matrix and its pole expansion in terms of optical...
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Dr Nina Strasser (Ruhr-University Bochum)9/22/26, 4:30 PMM34 - Soft meets hard – interfaces and interactions3) Contributed talk
Understanding aqueous interfaces at electrified metal surfaces remains a fundamental challenge, as continuum descriptions treat the solvent as a homogeneous medium and thus neglect its molecular nature. In particular, the neglect of hydrogen bonding and density fluctuations highlights the need to go beyond classical mean-field approaches.
A striking example of this breakdown is provided by...
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Matthias Hepting (Max Planck Institute for Solid State Research)9/22/26, 4:30 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing4) Invited talk
Ruddlesden-Popper (RP) nickelates exhibit high-temperature superconductivity closely intertwined with charge and spin density-wave order. However, fundamental questions remain regarding the orbital character, symmetry, and gap formation associated with these density-wave instabilities. Using polarization-resolved Raman scattering on the trilayer compound La$_4$Ni$_3$O$_{10}$, we resolve...
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Erik Pabst (TU Ilmenau)9/22/26, 4:45 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Predicting the optical properties of solids is of great interest for a wide variety of applications, such as solar cells, optical computing and sensors. However, calculating optical properties from first principles is computationally highly demanding. Recent advances have demonstrated that graph neural networks can accurately predict the optical spectra of a wide range of materials directly...
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Malina Seyffertitz (University of Cambridge)9/22/26, 4:45 PMM34 - Soft meets hard – interfaces and interactions3) Contributed talk
Supercapacitors are a perfect example of a soft meets hard interface: they consist of two nanoporous electrodes submerged in a liquid electrolyte. When a voltage is applied across the electrodes, the ions in the electrolyte move accordingly and form electric double layers at the electrode-electrolyte interfaces to balance the charge. This interfacial charge separation enables rapid, reversible...
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Michal Horodecki (ICTQT University of Gdańsk)9/22/26, 4:45 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
One of the challenges of mesoscopic physics is calorimetric detection of microwave photons. It requires samples of ultrasmall heat capacity of order of Boltzmann constant. Here we investigate possibility of using proximitized metal for this purpose. First, we point out that the small heat capacity implies also small absorption rate. We show a trade-off between quantum efficiency of...
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Yvan Briard (a. Université de Bordeaux, CNRS, LOMA, UMR 5798, Talence France)9/22/26, 4:45 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
In cavity optomechanics, it is well established that when the single-photon optomechanical coupling exceeds both the cavity and mechanical damping rates, the optical mode becomes anharmonic. This anharmonicity gives rise to photon blockade, where the frequency difference between the first two excitations prevents a second photon from entering the cavity. An analytical description of this...
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Andrei Mazanik (Centro de Física de Materiales (CFM-MPC) Centro Mixto CSIC-UPV/EHU, E-20018 Donostia-San Sebastián, Spain)9/22/26, 4:45 PMM08 - Superconducting altermagnets - fundamentals and devices3) Contributed talk
We present a unified theoretical study of superconducting films and heterostructures hosting collinear $d$-wave altermagnetic order. Using a Ginzburg-Landau description, we show that the interplay between superconductivity and altermagnetism produces characteristic fourfold anisotropies in the critical temperature, parallel critical field, and critical current density under external magnetic...
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Dr Kirill Koshelev (Department of Electronic Materials Engineering, Research School of Physics, Australian National University)9/22/26, 4:45 PMM17 - Emerging trends in dielectric nanophotonics4) Invited talk
Scattering by dielectric resonant nanoparticles has been widely explored as a route to tailoring electromagnetic responses, yet most studies focus on steady-state behaviour. Here, we investigate the transient scattering response of Mie-resonant dielectric metastructures driven by short sub-picosecond pulses, extending resonant metaphotonics into the time domain.
We develop an analytical...
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Monja Stettner (PGI-3, Research Center Jülich)9/22/26, 4:45 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
Using angle-resolved photoemission spectroscopy, in particular photoemission orbital tomography (POT), we investigate the coverage-dependent electronic and geometric properties of the organic oligomer α-sexithiophene (6T) on Cu(110)-p(2×1)O [1]. The oxygen-induced reconstruction of the copper surface electronically decouples the molecules from the substrate [2]. By combining momentum-resolved...
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Abhi Jigneshkumar Suthar9/22/26, 5:00 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Ruddlesden-Popper (RP) nickelates have recently attracted significant attention following the emergence of superconductivity under pressure. However, their interpretation is often complicated by phase intergrowth and oxygen non-stoichiometry in crystals grown by the optical floating-zone method. Reliable identification of the structural phase is therefore essential prior to spectroscopic,...
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Dominik Kriegner (Institute of Physics of the Czech Academy of Sciences)9/22/26, 5:00 PMM08 - Superconducting altermagnets - fundamentals and devices4) Invited talk
Altermagnets are compensated collinear magnets whose opposite sublattices are related by lattice rotations rather than translations [1]. This symmetry leads to spin-split electronic bands with alternating sign in momentum space despite vanishing net magnetization. We recently demonstrated this band splitting in hexagonal MnTe [2], where it also gives rise to linear response phenomena usually...
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Mihir Date9/22/26, 5:00 PM1M06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
We investigate electronic instabilities in 2H-TaS$_{2}$ and a self-intercalated variant, 2H$^\dagger$-Ta$_{1+\delta}$S$_{2}$. In conventional samples, which we determine to be slightly hole-doped, spectral gaps and backfolded features are found as fingerprints of the $3\times3$ charge density wave (CDW). Notably, the backfolded features emerge only at a temperatures below $T\approx$65~K,...
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Andrei Matetskii (PGI-3, Forschungszentrum Jülich)9/22/26, 5:00 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
π conjugation – the delocalization of electrons across a network of overlapping p$_z$ orbitals is a foundational concept in organic chemistry, governing molecular stability, reactivity, and functionality across biological and technological domains. Aromaticity arises as a manifestation of this delocalization, where the population of delocalized bonding and antibonding orbitals, in accordance...
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Max Rauscher (Montanuniversität Leoben, Lehrstuhl für Physik)9/22/26, 5:00 PMM34 - Soft meets hard – interfaces and interactions3) Contributed talk
Understanding ion storage and transport in nanoporous electrodes for water desalination requires sophisticated experimental methods that can resolve how and in which pore regime ion concentration changes occur during operation. This information can be provided by operando X-ray techniques. Here, we present a correlative synchrotron approach under realistic operating conditions. We obtain...
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Jordi Picó Cortés (Università degli Studi di Firenze)9/22/26, 5:00 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
Cooper quartets are an exotic electronic state composed of correlated four electron excitations, generalizing the concept of Cooper pairs to charge-4e superconductors. While the latter are yet to be realised experimentally as a macroscopic phase, hybrid superconducting nanodevices may offer a highly-tunable and well-studied platform for the realisation and investigation of quartet states....
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585. Symmetry-Aware Machine Learning for Local Structure Classification in Condensed and Soft MatterJakob Hausberger9/22/26, 5:00 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Classifying local structure is a central task in condensed-matter physics and materials science. Traditional descriptors such as Steinhardt bond-orientational order parameters are widely used for this purpose, but they often struggle to distinguish structurally similar phases and perform poorly in heterogeneous or partially ordered systems. This project investigates symmetry-aware...
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Dylan Litchfield9/22/26, 5:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Infrared (IR) detectors are essential for applications including environmental monitoring [1], gas spectroscopy [2], and thermal imaging [3], each imposing distinct requirements on sensitivity, speed, and spatial resolution. While several IR detectors are already commercially available, existing technologies still exhibit fundamental trade-offs [4]: photon detectors offer high sensitivity but...
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Tomaž Rejec9/22/26, 5:15 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
We study a two-terminal Josephson junction with conventional superconductors and a normal region with Rashba spin-orbit interaction, characterized by two Aharonov-Casher (AC) fluxes. When the superconducting phase difference equals $\pi$, the Andreev subgap spectrum may host zero-energy Weyl singularities associated with a vanishing normal-state reflection eigenvalue. With one of the AC fluxes...
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Zoltan Sztranyovszky (University of Birmingham)9/22/26, 5:15 PMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
We present an eigenmode based method to calculate the scattering-matrix and the optical cross-section of resonators. The eigenmodes of the system of interest are calculated via perturbation of an analytically solvable basis system using the resonant-state expansion (RSE). The eigenmodes form a complete set, and one can construct the Green’s function as a Mittag-Leffler series. The...
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Mathieu Flavenot (IPCMS)9/22/26, 5:15 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
The recent discovery of superconductivity below 80 K in bulk Ruddlesden–Popper (RP) La3Ni2O7 (LNO327) under high pressure (>14 GPa) has reignited intense interest in nickel-based superconductors1. This breakthrough marks a new chapter in the “Nickel Age”, demonstrating superconductivity in a compound with a nominal Ni2.5+ valence state and a non–square-planar coordination geometry, clearly...
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Johannes Krondorfer9/22/26, 5:15 PMM22 - Compressing complexity: machine learning in hard and soft condensed matter physics3) Contributed talk
Accurate evaluation of partition functions in molecular and solid-state systems remains computationally challenging due to high dimensionality and expensive energy evaluations. We present two complementary approaches to address this problem.
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First, we introduce ZoRRO, a framework based on tailored coordinate transformations into translational, rotational, and vibrational (TRV) degrees of... -
652. Influence of higher-order Van Hove singularities on superconductivity-induced Kondo destructionDr Grzegorz Michałek (Institute of Molecular Physics, Polish Academy of Sciences)9/22/26, 5:15 PMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
In quantum materials research, exploiting electronic interactions is key to tuning systems toward interesting phases. However, describing correlations in interacting lattice systems remains notoriously difficult, posing challenges for both precise theoretical descriptions and the interpretation of experimental data. In this work, we investigate the effect of higher-order Van Hove singularities...
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Ahmad Alem (Technical University of Leoben, Leoben, Austria)9/22/26, 5:15 PMM34 - Soft meets hard – interfaces and interactions3) Contributed talk
Interfaces between aqueous electrolyte and porous carbon electrodes critically govern the performance of organic redox flow batteries (ORFBs). In this work, we investigate how pretreatment strategies including O2 plasma, KOH activation, and CO2 activation modify the interfacial properties of carbon felt electrodes by tuning surface chemistry, defect structure, and porosity. Using X-ray...
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Mirko Cinchetti (TU Dortmund University)9/22/26, 5:15 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution4) Invited talk
Angle-resolved photoemission spectroscopy (ARPES) has evolved into a powerful platform for probing not only the equilibrium electronic structure but also the ultrafast dynamics of correlated quantum materials. In this talk, I will highlight how time-resolved momentum microscopy based on high-repetition-rate fs-XUV sources enables full–Brillouin-zone mapping of nonequilibrium electronic...
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Valentin Barth (Universität Konstanz)9/22/26, 5:15 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Mechanical properties in MEMS and NEMS are very sensitive to changes in the environment. For the studied membranes, it is known that for example, a global temperature change influences the eigenfrequency [1]. Besides external heating, internal processes due to the vibration (e.g. local friction) could lead to local changes in temperature. Silicon nitride membranes (side length: 450 μm,...
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Felix Binkowski (Zuse Institute Berlin)9/22/26, 5:30 PMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
We investigate numerical approaches based on AAA rational approximation [1, 2] for applications in nanophotonics. The AAA algorithm provides a powerful framework for constructing low-dimensional models of photonic systems by identifying and approximating dominant resonances [3], which are critical for understanding the electromagnetic response functions of the systems [4,5].
Resonances are...
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A. McCollam (School of Physics, Kane Building, University College Cork, College Road, Cork, Ireland)9/22/26, 5:30 PM1M06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Lifshitz transitions of the Fermi surface are significant in a wide variety of strongly correlated and topological materials, and understanding the origin and influence of Lifshitz transitions has led to deeper understanding of key aspects of magnetic, transport or quantum critical behaviour.
In the ferromagnetic superconductor UCoGe, a magnetic field applied along the c-axis induces a...
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Kun Jiang9/22/26, 5:30 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
We present a systematic study of the electronic structure of La3Ni2O7, focusing on the roles of the \gamma band, Jahn–Teller (JT) distortion, and apical oxygen vacancies. We show that the \gamma band is highly sensitive to details of the numerical approximations, and can therefore strongly influence the low-energy electronic states. For thin films, epitaxial strain predominantly enhances the...
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peihao Fu (University of Florence)9/22/26, 5:30 PMM08 - Superconducting altermagnets - fundamentals and devices3) Contributed talk
We consider a superconducting altermagnet heterostructure and demonstrate that the interplay between altermagnetism and a selective filter of transverse momentum channels enables perfect nonreciprocal spin-polarized currents.
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We demonstrate that this nonreciprocity manifests in both local and nonlocal spin currents, signalling the emergence of directionally selective local and nonlocal spin... -
Tahereh Parvini9/22/26, 5:30 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Abrikosov vortices strongly influence dissipation and coherence in superconducting devices, yet their nucleation and pinning dynamics in mesoscopic structures remain difficult to probe experimentally. Here we employ a cavity-optomechanical platform to detect vortex entry in a superconducting aluminum nanostring resonator integrated into a SQUID-terminated microwave cavity. By monitoring the...
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Claudio Guarcello (Department of Physics ‘E.R. Caianiello’, University of Salerno, Fisciano (SA) 84084, Italy)9/22/26, 5:30 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
We report switching-current signatures of magnetic avalanches in an $n$-doped InAs/Al nanowire Josephson junction. Under a perpendicular magnetic field, the device exhibits a low-field Fraunhofer-like modulation of the switching current together with reproducible discrete jumps appearing at $|B|\approx 3$~mT. These features separate distinct switching-current branches and show a clear...
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Diana M. Kirschbaum (Institute of Solid State Physics, TU Wien)9/22/26, 5:30 PMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Strongly correlated electron systems are known to exhibit a range of exotic phenomena, including strange metal behavior and unconventional superconductivity [1]. More recently, they are also discussed in the context of nontrivial band topology [2]. As the standard formulation of the latter relies on well-defined quasiparticles, one may ask whether topological characteristics can persist in...
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Dr Hadi Shamkhi (Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR))9/22/26, 5:45 PMM17 - Emerging trends in dielectric nanophotonics3) Contributed talk
While color down-conversion (DC) is poised to replace costly pick-and-place assembly for mass-producing RGB microLED displays, it currently faces critical bottlenecks: inefficient color conversion and uncollimated emission, particularly as pixel dimensions shrink below 2 μm. Current industry workarounds, such as thick quantum dot (QD) plates or complex vertical stacking, introduce significant...
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Frank Lechermann (Ruhr University Bochum)9/22/26, 5:45 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
There are two known superconducting nickelate families, i.e. low-
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valence Ni($3𝑑^{9−\delta}$) compounds and Ruddelsden-Popper (RP) materials with Ni($3𝑑^{8-\delta}$) valence. While both families host NiO$_2$ square
planes, key difference is given by the missing apical oxygen atoms in
the low-valence nickelates. A possible route to connect both nickelate
families might be given by the... -
Vrishali Sonar (Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University)9/22/26, 5:45 PMM10 - Mesoscopic superconductivity and quantum circuits3) Contributed talk
P-wave superconductors [1] host rich quantum phenomena arising from odd-parity, anisotropic, spin-triplet pairing, including nontrivial topology, Majorana physics, and time-reversal symmetry breaking. In particular, chiral and anisotropic p-wave phases strongly influence quasiparticle transport and Andreev reflection, offering promising routes for superconducting spintronics. However,...
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Dr František Herman (Comenius University in Bratislava)9/22/26, 5:45 PMM08 - Superconducting altermagnets - fundamentals and devices3) Contributed talk
Altermagnets (AMs) [1] have recently emerged as a promising platform in condensed matter physics, with possible applications in multilayer nanostructures such as magnetic superconducting tunnel junctions [2]. Compared with ferromagnets (Fs), which are commonly employed in a similar fashion [3], altermagnets offer the key advantage of vanishing macroscopic magnetization—a property that enhances...
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Gregor Zinke (University of Augsburg)9/22/26, 5:45 PMM20 - The new Frontiers of Angle-Resolved Photoemission spectroscopy: spin, time and spatial resolution3) Contributed talk
Two-dimensional (2D) van der Waals materials and their heterostructures with molecular materials are a highly promising class of materials due to their low dimensional nature and highly tuneable electronic properties that lead to rich charge and spin carrier dynamics. Beyond chemical tunability, their optoelectronic properties can be dynamically modified on ultrafast timescales through the...
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Ofelia Durante (Department of Physics ‘E.R. Caianiello’, University of Salerno, Via Giovanni Paolo II 132, Fisciano (SA) 84084,Italy)9/23/26, 10:30 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices4) Invited talk
Lead-free 2D halide perovskites are promising materials for sustainable optoelectronics and neuromorphic photonics, but their intrinsic transport properties are often obscured in polycrystalline films by grain boundaries and Sn oxidation. Here, we investigate single crystals of PEA$_2$SnI$_4$ to clarify the interplay between surface degradation, charge transport, and photoresponse, extending...
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Robert Winkler (Institute of Electron Microscopy and Nanoanalysis, Graz University of Technology , 8010 Graz, Austria)9/23/26, 10:30 AMM30 - Focused Beam Technologies for Functional Nanodevices4) Invited talk
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Shamashis SENGUPTA (IJCLAB (Paris-Saclay))9/23/26, 10:30 AMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
The problem of dissipation in superconductors is associated with variations in time of the order parameter. In low-dimensions, the appearance of a finite voltage is related to the ac Josephson effect. It may lead to the observation of a charge current consisting simultaneously of superconducting and dissipative components. A notable example of such a phenomenon is the occurrence of phase slips...
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Ralf Drautz (ICAMS/Ruhr-Universität Bochum)9/23/26, 10:30 AMM21 - Recent Developments in Machine Learned Interatomic Potentials4) Invited talk
Machine Learning Interatomic Potentials (MLIPs) are undergoing a paradigm shift from narrowly trained, system-specific models to universal frameworks intended to generalize across the periodic table. While early MLIPs focused on accelerating atomistic simulations for a particular material or chemistry, recent developments emphasize capturing complex thermodynamic and kinetic properties in...
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Xavier Gonze (Université catholique de Louvain)9/23/26, 10:30 AMM12 - Recent Developments of the Polaron Theory4) Invited talk
The standard Fröhlich (one phonon band, non-degenerate electronic state, isotropic) model is a workhorse for the large polaron community, used for decades.
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Recently [1], a generalization of this Fröhlich model (multiple phonon bands, degenerate electronic states, anisotropic) has been introduced.
I will present a high-throughput analysis of the outcome of these two models [2] for a large... -
Dr Veronika Sunko (Insitute of Science and Technology Austria (ISTA))9/23/26, 10:30 AMM25 - Magnetism Research in the Central Europe Region4) Invited talk
Optical probes are naturally well suited to detecting broken symmetries, including time-reversal symmetry (T), and are frequently used in this way, for example, to map ferromagnetic domains. But the conditions under which optics can detect T - breaking in antiferromagnets with no net magnetization are far more subtle. The key distinction is whether the effect of T can be undone by a simple...
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Minoru Yamashita (ISSP, University of Tokyo)9/23/26, 10:30 AMM02 - Heavy quasiparticles in heavy fermion compounds4) Invited talk
Spontaneous time-reversal symmetry (TRS) breaking is one of the interesting cooperative phenomena brought by a phase transition in solids, which allows both a spontaneous magnetic moment as observed in a ferromagnet and a chiral edge flow to be realized. Of particular interest in the chiral flow by the broken TRS is the topologically-protected edge current in a chiral superconductor in which...
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Prof. Alain Jerve FOTUE (university of dschang), Ms S.L. Dongmo Tedoa (university of dschang)9/23/26, 10:30 AMM01 - Electron correlations and phonons in quantum materials4) Invited talk
In this work, we evaluated the eigenenergies of the ground and first excited statesofpolaron, usingPekartypevariationnalmethod, inpseudo-harmonic potentialquantumdot. Thiswasdonewiththeaimofinvestigatingthedecoherence time and the Shannon entropy of the quantum dot in three different metal halide perovskites materials (MAPbCl3 , MAPbBr3, and MAPbI3 ). Numerical analysis resutls show that the...
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Primoz Ziherl (Faculty of Mathematics and Physics, University of Ljubljana and Jozef Stefan Institute)9/23/26, 10:30 AMM37 - Emergent Behavior in Soft and Living Matter4) Invited talk
Many mechanical models of tissues are based on the assumption that cells possess an effective surface energy, typically coupled with a hard or a soft volume constraint. In the simplest case, a cell’s surface energy differs from that of a liquid droplet only in the magnitude of tensions assigned to its functionally distinct sides. We present a few examples showing how the resulting preferred...
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Prof. Amalio Fernandez-Pacheco (TU Wien)9/23/26, 11:00 AMM30 - Focused Beam Technologies for Functional Nanodevices4) Invited talk
The extension of nanotechnology into three dimensions presents compelling opportunities to explore emergent physical phenomena while enabling the realization of next-generation 3D device architectures for future computing. At the same time, this transition introduces substantial challenges, requiring advanced nanofabrication strategies that surpass the limits of conventional lithographic...
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Dr Amir Kleiner (Weizmann Institute of Science)9/23/26, 11:00 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
In many two-dimensional semiconductors, spatially varying strain profiles provide a powerful means to induce and steer exciton motion, yet a predictive microscopic description of the resulting dynamics remains limited. Here, we present a general first-principles framework for exciton dynamics in inhomogeneous materials. Our approach combines GW-BSE calculations of strain-dependent excitonic...
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Anirudh Chandrasekaran (Max Planck Institute for Solid State Research)9/23/26, 11:00 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
We derive a set of general formulae for projecting a real space electronic interaction $V(\mathbf{r})$ on to orbital resolved bands in 3D, layered and monolayer lattices. The resulting k-space interaction $V(\mathbf{k}_1, \mathbf{k}_2, \mathbf{q}; n_1, n_2, n_3, n_4)$ resembles a vertex function, with momentum conservation up to a reciprocal lattice vector and an explicit dependence on the...
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Michael Wassermair (Institute of Science and Technology Austria)9/23/26, 11:00 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Active shape changes are essential for cell function, enabling motility, differentiation, and division. The active processes governing cell shape are tightly regulated by plasma membrane–bound proteins, which enable mechano- and chemosensitive responses as well as adhesion and force transmission to the environment.
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We develop a trainable coarse-grained model of a cell that continuously adapts... -
Erik Linnér (Scuola Internazionale Superiore di Studi Avanzati)9/23/26, 11:00 AMM01 - Electron correlations and phonons in quantum materials4) Invited talk
Fluctuating field theory is a recently developed method for the description of competing collective fluctuations in correlated electron systems, able to account for spin, charge, and superconducting instabilities. On the basis of a variational principle, the method allows to explicitly account for the leading collective modes and their interplay, with access to electronic and spectroscopic...
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Jonas Hänseroth (Technische Universität Ilmenau)9/23/26, 11:00 AMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
This work demonstrates that systematic fine-tuning transforms modern foundation machine-learned interatomic potentials (MLIPs) into consistently accurate, near-ab initio models across diverse architectures. Benchmarking five leading frameworks-MACE, GRACE, SevenNet, MatterSim, and ORB-we show that fine-tuning improves force and energy predictions by up to one and three orders of magnitude,...
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ali gencer (Ankara University, Turkiye)9/23/26, 11:00 AMM12 - Recent Developments of the Polaron Theory4) Invited talk
In this work, MgB2 (with C-coated boron powders) wires were fabricated using the Internal Magnesium Diffusion (IMD) method. To improve flux pinning within the superconducting matrix under applied magnetic fields up to 12 T, the central magnesium rods were coated with different metallic layers, namely Cu, Sn, and Ag, as low-temperature activators. The low-temperature activation effect of Cu...
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Helena Reichlova (FZU Czech Academy of Sciences)9/23/26, 11:00 AMM25 - Magnetism Research in the Central Europe Region4) Invited talk
Ferromagnets have long been the foundation of spintronics applications. However, materials with compensated magnetic order, such as antiferromagnets, offer distinct advantages, including faster dynamics and a wider range of available materials. This has spurred significant research into antiferromagnetic spintronics, leading to many exciting discoveries [1]. Despite these advancements,...
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Victor Rouco (Universidad Complutense de Madrid (UCM))9/23/26, 11:00 AMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
Complex oxide materials stand at the forefront of solid-state quantum technologies, offering a rich playground where quantum properties can be finely tuned via external stimuli. The interplay between competing ground states in these systems not only unveils fascinating fundamental physics but also paves the way for multifunctional applications. Among these, oxide-based tunnel junctions have...
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Chan-young Lim (Donostia International Physics Center)9/23/26, 11:15 AM1M06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
Kagome lattice systems host Dirac dispersions, flat bands, and van Hove singularities near the Fermi level, making them a model setting for correlated electronic behavior. Here, we present an angle-resolved photoemission spectroscopy (ARPES) study of kagome 166 compounds, including LuFe6Ge6, LuCr6Ge6, HoCr6Ge6, and ScNi6Ge6, most of which have not been previously investigated by ARPES. We...
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Dr Florian Brünig (University of Luxembourg)9/23/26, 11:15 AMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
Liquids provide a uniquely stringent test for atomistic modeling: experimentally accessible observables such as structure factors, diffusion coefficients, and vibrational spectra emerge from a delicate interplay of quantum-mechanical intermolecular interactions, collective fluctuations, and nuclear quantum effects over extended length and time scales. Still, these properties remain challenging...
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Emanuele Locatelli (University of Padova)9/23/26, 11:15 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Active systems, due to the local breaking of equilibrium, allow for phenomena that their equilibrium counterparts cannot attain. For example, polar active polymers, i.e. polymers made of active monomers whose activity is directed as the local tangent to the polymer backbone, display a coil-to-globule-like transition in three dimension, driven by activity. Introducing heterogeneity in the...
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Dr Sergey Subach (Peter Grünberg Institut (PGI-3), Forschungszentrum Jülich)9/23/26, 11:15 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
For the quantum spin Hall insulator bismuthene, robust helical edge states protected by a large topological band gap of 800 meV have been demonstrated, making the system interesting for potential room-temperature spintronic applications [1]. Here, we show that a single layer of elemental Bi, formed by intercalating an epitaxial graphene buffer layer on SiC(0001), can be transformed into...
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Ronny Thomale (Theoretische Physik I, Julius-Maximilians-Universität Würzburg)9/23/26, 11:30 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Translation symmetry-breaking order is assumed to be suppressed by the lack of Fermi surface nesting near certain higher-order Van Hove singularities (HOVHS). We show the anisotropic band-flattening inherent to such HOVHS, combined with broadening of the Fermi surface due to elevated critical temperatures, results in the Fermi surface becoming approximately nested at a wavevector unrelated to...
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Dr Tomaž Mertelj (Jozef Stefan Institute)9/23/26, 11:30 AMM25 - Magnetism Research in the Central Europe Region4) Invited talk
The hybridized layer at the interfaces between a magnetic metal and another material represents one of the important low dimensional paradigms offering a method for tailoring magnetic properties of ultrathin metallic layers. In the case of molecular semiconductors the hybridization between the molecular p orbitals and the d orbitals of the interfacial metallic atoms modifies both the molecules...
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Mrs Alix Tatiana Escalante-Quiceno (INMA), JOSE MARIA DE TERESA (Instituto de Nanociencia y Materiales de Aragón (CSIC-Universidad de Zaragoza))9/23/26, 11:30 AMM30 - Focused Beam Technologies for Functional Nanodevices3) Contributed talk
Investigations in fundamental science require advanced tools. In particular, the field of Nanoscience uses scanning electron and ion microscopes that allow imaging and patterning materials with resolution in the range of 1 nm [1, 2]. These microscopes are known as the Scanning Electron Microscope (SEM) and the Focused Ion Beam (FIB). Besides, Nanoscience studies often rely on the Atomic Force...
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Elias Greil (TU Graz)9/23/26, 11:30 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
High-harmonic generation is a sensitive all-optical probe of symmetry and electron dynamics in solids. Here, we use first-principles time-dependent density functional theory (TDDFT) to study high-harmonic generation in T$_\mathrm{d}$-WTe$_2$, a two-dimensional semimetal with switchable out-of-plane ferroelectric polarization driven by interlayer sliding. We show that the mirror-symmetry...
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Davide Breoni (Università di Trento)9/23/26, 11:30 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Polymers present a wide variety of topologies: they can be cyclized, tied into knots, and can form entangled melts. Investigating such structures in the frame of biological systems, we incur into another layer of complexity, as polymers can display activity in the form of directed motion. Studying the interplay of activity and topology in polymers can bring a better understanding of biological...
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Tanul Gupta (University of Strasbourg)9/23/26, 11:30 AMM05 - Transport in low-dimensional strongly correlated quantum systems3) Contributed talk
We present exact large-scale Quantum Monte Carlo results for the one-dimensional Bose–Hubbard model with power-law hopping ∼ 1/r^α. For all 1 < α ≤ 3, we find that the superfluid–Mott-insulator transition at unit filling is continuous and scale invariant, and therefore incompatible with the Berezinskii–Kosterlitz–Thouless scenario recovered only for α > 3. We characterize this new universality...
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Dr Osor Slaven Barišić (Institute of Physics)9/23/26, 11:30 AMM12 - Recent Developments of the Polaron Theory3) Contributed talk
While often less emphasized than electronic properties, phonon spectral functions provide rich insight into quasiparticles and collective modes involving strong electron–phonon coupling. The hybridization between phonon branches and plasmons has recently been studied [1] to address the superconducting transition temperature in layered materials that host low-energy plasmon modes. Analysis of...
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Julien Steffen (Lehrstuhl für Theoretische Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg)9/23/26, 11:30 AMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
Universal machine learning interatomic potentials (uMLIPs) have shown an astonishing ability of describing almost arbitrary chemical systems reasonably. They are, however, not accurate enough for the calculation of quantities like reaction rate constants that require a very precise representation of the potential energy surface. Fortunately, uMLIPs can be fine-tuned for a system of interest,...
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Anna Kauch (Institute of Solid State Physics, TU Wien)9/23/26, 11:30 AMM01 - Electron correlations and phonons in quantum materials3) Contributed talk
Susceptibilities and optical conductivity are examples of two-particle response functions that are the key quantities for connecting theoretical predictions for correlated materials with experimental results. It can however become highly nontrivial to calculate them, especially in cases when nonlocal electronic correlations are important.
In my talk I will present a new computational...
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Carolina de Almeida Marques (School of Physics and Astronomy, University of St Andrews)9/23/26, 11:30 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Interaction effects in strongly correlated electron materials stabilize emergent electronic phases that promise the next technological revolution, such as superconductivity, Mott insulating states and density wave orders. To gain insight into the origin of these states and learn how to manipulate them, a deep understanding of their electronic structure and coupling to lattice and spin degrees...
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Anna Benzer (Institute of Microelectronics, TU Wien, Austria)9/23/26, 11:45 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
As silicon CMOS technology approaches scaling limits, two-dimensional (2D) semiconductors such as molybdenum disulfide (MoS$_2$) are being explored for next-generation transistor channels due to their excellent electrostatic control and reduced short-channel effects. However, achieving low contact resistance remains a key challenge, as Fermi level pinning (FLP) and van der Waals gaps in...
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peihao Fu (University of Florence)9/23/26, 11:45 AMM05 - Transport in low-dimensional strongly correlated quantum systems3) Contributed talk
Beyond the concept of Cooper pairs, Cooper quartets are exotic fermionic aggregates forming the basis of charge-$4e$ superconductivity. They provide a platform to explore genuine four-body interactions, with potential relevance for topological matter and strongly correlated quantum systems. However, their realization, engineering, and unambiguous detection remain outstanding challenges.
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Here,... -
Juan Ignacio Ocaña Parral (Instituto de Nanociencia y Materiales de Aragón (INMA))9/23/26, 11:45 AMM30 - Focused Beam Technologies for Functional Nanodevices3) Contributed talk
Metallic nanopatterns exhibit unique electrical and optical properties, making them highly attractive for applications in nanoelectronics, nanophotonics, and sensing technologies.
However, conventional fabrication techniques often face trade-offs between resolution, throughput, and cost-effectiveness, motivating alternative approaches [1]. Here, we present a versatile, resist-free method...
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Petar Mitrić (Institute of Physics Belgrade)9/23/26, 11:45 AMM12 - Recent Developments of the Polaron Theory3) Contributed talk
The cumulant expansion (CE) method provides an alternative to the conventional Dyson equation approach for the calculation of spectral functions and quasiparticle properties in interacting quantum many-particle systems. Furthermore, when combined with the independent particle approximation (IPA), the CE can also be used to calculate charge mobility.
We examine the range of validity of...
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Maximilian Lechner9/23/26, 11:45 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Biological molecular machines reliably undergo complex nanoscale dynamics to perform tasks, demonstrating how activity and multistability can be harnessed to process information and do work. While it is now possible to engineer complex nanostructures from synthetic building blocks, endowing them with machine-like functionality remains elusive, in part because we lack tools to control their...
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Lavi Kumar Upreti (University of Zurich)9/23/26, 11:45 AMM01 - Electron correlations and phonons in quantum materials3) Contributed talk
Most condensed matter physics happens on lattices with commuting translations—move right then up equals up then right. But hyperbolic lattices break this: translations become non-Abelian (NAB) or non-commutative, bringing remarkable physics—novel phases from single particle to many-body, superior quantum error correction. Problem: hyperbolic lattices need exponentially growing connections,...
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Florian Lindner (Graz University of Technology)9/23/26, 11:45 AMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
Metal-organic frameworks (MOFs) are highly porous, mostly crystalline materials that hold considerable promise for addressing major societal challenges, for example in gas storage (CO2 capture) and separation.[1] For many of these applications, mechanical response and thermal transport are key material properties.[2] As MOFs are typically insulating materials, both properties are governed by...
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Matthias Diez (Graz University of Technology)9/23/26, 12:00 PMM25 - Magnetism Research in the Central Europe Region3) Contributed talk
The recent surge of interest in chiral phonons – vibrational modes carrying angular momentum – brings renewed attention to the interplay between magnetism and atomic or molecular motion. While current studies focus mostly on bulk materials, molecular systems provide an ideal, well-controlled platform for the exploration of similar phenomena on the microscopic scale. In this work, we present a...
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Amina Zid (HZDR)9/23/26, 12:00 PMM30 - Focused Beam Technologies for Functional Nanodevices3) Contributed talk
Gas Field Ion Sources (GFIS) have already demonstrated their efficiency in nano imaging and patterning due to their high brightness, high current density and superior spatial resolution [1]. This type of ion source typically employs light noble gases such as helium and neon. In the first case, negligible sputtering and fast diffusion enables image resolution as low as 0.5nm, while the latter...
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Jernej Mravlje (Jozef Stefan Institute)9/23/26, 12:00 PMM01 - Electron correlations and phonons in quantum materials3) Contributed talk
We investigate the electronic Raman scattering of Sr2RuO4 and Sr2RhO4 using a material-realistic dynamical mean-field theory approach. In the ruthenate compound we identify the low-energy Fermi liquid behavior and point out that the enhanced Raman response at higher energies is a fingerprint of Hund metals. These signatures originate in the two-stage coherence of Hund metals and associated...
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Maik Selch (Ariel University)9/23/26, 12:00 PMM05 - Transport in low-dimensional strongly correlated quantum systems3) Contributed talk
We introduce the concept of emergent Hall viscosity in condensed matter systems whose effective field theories incorporate strain-induced emergent vielbein, metric, and gauge fields. This framework provides a unified description of previously studied contributions, which we term electronic and geometric Hall viscosities, and naturally allows for additional mixed terms. As a concrete example,...
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Tobias Moeslinger (Chalmers University of Technology, Swedern)9/23/26, 12:00 PMM12 - Recent Developments of the Polaron Theory3) Contributed talk
Photo-electrocatalytic water splitting is a promising approach for meeting the global demand of sustainable hydrogen production, but its efficiency is often limited by charge carrier dynamics in the photoanode materials. Bismuth vanadate (BiVO$_4$) is a leading candidate for this application, yet its performance is strongly affected by the trapping of photogenerated charges, which can hinder...
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Saeed Rasouli (PhD student)9/23/26, 12:00 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Germanane is a group IV, two-dimensional semiconductor, analogous to graphane, which is predicted to possess a direct bandgap. Its structure and properties can be tuned by surface functionalization, which can also increase the material’s stability. Chemically synthesized crystals of methyl-terminated (GeCH₃) germanane are exfoliated via the scotch-tape method, and the resulting multilayered...
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Angela Rittsteuer (University of Vienna)9/23/26, 12:00 PMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
Most atomistic machine-learning models rely on local atomic representations with finite spatial cutoffs and therefore struggle to capture long-range electrostatic effects. To address this limitation, we build on the fact that Born effective charges, defined as derivatives of the macroscopic polarization with respect to atomic displacements, provide a well defined description of the coupling...
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Daniel Schultz (Karlsruhe Institute of Technology)9/23/26, 12:00 PMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
We demonstrate that soft fluctuations of translation symmetry-breaking loop currents provide a mechanism for unconventional superconductivity in kagome metals that naturally addresses the multiple superconducting phases observed under pressure. Focusing on the rich multi-orbital character of these systems, we show that loop currents involving both vanadium and antimony orbitals generate...
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Rémi Goerlich (Laboratoire de Physique à l'ENS de Lyon)9/23/26, 12:00 PMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
The ability to measure the stochastic degrees of freedom of a thermal system enables the extraction of energy from an equilibrium heat bath. This is the underlying principle of Maxwell’s demon and subsequent information engines [1, 2]. This apparent thermodynamics paradox is resolved when accounting for the energetic cost of the associated information processing and these novel engines are...
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Shiyu Deng (Institut Laue-Langevin (ILL))9/23/26, 12:15 PMM01 - Electron correlations and phonons in quantum materials3) Contributed talk
The spin-ladder compounds of the BaFe$_2X_3$ ($X$ = chalcogen) family may be viewed as dimensional reductions—along stripe-like motifs—of the two-dimensional iron-based pnictide planes extensively studied since 2006. Remarkably, despite their reduced dimensionality, these materials retain the capacity for unconventional ground states, exemplified by the emergence of superconductivity in...
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Alexey Verkhovtsev (MBN Research Center, Altenhöferallee 3, 60438 Frankfurt am Main, Germany)9/23/26, 12:15 PMM30 - Focused Beam Technologies for Functional Nanodevices3) Contributed talk
This talk will present the key elements of the computational multiscale modelling approach to simulating 3D nanofabrication using focused electron beam-induced deposition (FEBID) [1-5]. This approach is based on computational algorithms (Irradiation-Driven Molecular Dynamics [2] and Stochastic Dynamics – SD [5,6]) implemented in the advanced software package MBN Explorer [7], which is being...
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Mark E. Tuckerman (1Department of Chemistry, New York University, New York, NY 10003 USA 2Courant Institute of Mathematical Sciences, New York University, New York, NY 10014 USA 3NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai, China 200062 4Simons Center for Computational Physical Chemistry at New York University, New York, NY 10003 USA)9/23/26, 12:15 PMM21 - Recent Developments in Machine Learned Interatomic Potentials4) Invited talk
Candidate systems for next-generation battery electrolyte materials, such as deep eutectic solvents and ionic liquids, often suffer from the limitation of an empirical inverse relation between viscosity and conductivity, known as Walden’s rule, which suppresses rates of charge transport and limits their electrochemical performance characteristics. An alternative to these ionic systems involves...
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Misa Nozaki (National Institutes for Quantum Science and Technology)9/23/26, 12:15 PMM05 - Transport in low-dimensional strongly correlated quantum systems3) Contributed talk
Chirality-induced spin selectivity (CISS), in which electrons transmitted through nonmagnetic chiral materials exhibit strong spin-dependent transport, has attracted growing interest for spintronic applications [1]. Experiments have reported spin polarizations of several tens of percent in a variety of quasi-one-dimensional chiral systems, including DNA, oligopeptides, helicenes, and helical...
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Bernhard Bayer (TU Wien)9/23/26, 12:15 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Graphene has been suggested as an ultimately thin functional coating for metallurgical alloys such as steels. However, even on pure iron (Fe), the parent phase of steels, growth of high quality graphene films remains largely elusive to date. We here report scalable chemical vapour deposition (CVD) of high quality monolayer graphene films on Fe substrates.[1] To achieve this, we here elucidate...
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Dr Anze Bozic (Jozef Stefan Institue)9/23/26, 12:15 PMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
The electrostatic nature of protein pair potentials dictates the fundamental behavior of biological systems, from molecular recognition to the phase stability of highly concentrated formulations. However, accurately quantifying the effective charge state that governs these potentials remains a challenge, as existing methods often fail to reconcile theoretical predictions with experimental...
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Mr Mohammad Sameer (Institute of Science and Technology, Austria)9/23/26, 12:15 PMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
The kagome superconductor CsV$_3$Sb$_5$ ($T_c$ ≈ 2.5 K) hosts a 2×2×2 charge density wave below 94 K$^{[1]}$ and signatures of electronic nematicity and time-reversal-symmetry breaking near 30 K. The interplay of these orders with its superconducting state and Fermi-surface topology remains an open question.
Using resonant torsion magnetometry, we investigate CsV$_3$Sb$_5$ single crystals...
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Stáňa Tázlarů (Faculty of Mathematics and Physics, Charles University, Prague)9/23/26, 12:15 PMM25 - Magnetism Research in the Central Europe Region3) Contributed talk
Microscopic structure of (anti)ferromagnets (A)FMs can be described using Heisenberg spin Hamiltonians, with corresponding parameters such as spin-spin exchange couplings or anisotropies. Experimental determination of these parameters typically involves measurement of magnetic excitation spectra either via inelastic neutron scattering(INS) or (THz)GHz magneto-absorption.
While the...
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Leonid Pourovskii (CPHT, CNRS, Ecole polytechnique, IP Paris, 91120 Palaiseau France)9/23/26, 4:00 PMM02 - Heavy quasiparticles in heavy fermion compounds4) Invited talk
Rare-earth triangular-lattice compounds stand as prime candidates for harboring exotic quantum spin liquid (QSL) phases, but their effective low-energy Hamiltonians and magnetic ground states remain difficult to determine experimentally. We evaluate ab initio effective spin-1/2 Hamiltonians for a set of Ce and Yb triangular lattice compounds from their paramagnetic electronic structure using...
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Asia Sarycheva (INM – Leibniz-Institut für Neue Materialien gGmbH), Prof. Volker Presser (INM – Leibniz Institute for New Materials, Saarbrücken, Germany; Department of Materials Science and Engineering, Saarland University, Saarbrücken, Germany; saarene, Saarland Center for Energy Materials and Sustainability, Saarbrücken, Germany)9/23/26, 4:00 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices4) Invited talk
Transition metal carbides and carbonitrides, MXenes, represent a unique class of 2D materials, where metallic electronic conductivity and redox-active surface coexist in a single material. This allows MXenes to function as "all-in-one" platforms for energy storage electrodes: the surface groups inherited from synthesis provide active redox centers. At the same time, the inherent electronic...
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Miguel Ortuño Ortín (Universidad de Murcia)9/23/26, 4:00 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
This work investigates bistable current-voltage (I–V) characteristics in amorphous a-YxSi1−x thin films, where disorder is controlled by thermal annealing. When a disordered insulator is biased electrically, the electron system can heat up well above the phonon bath temperature due to weak electron-phonon coupling, giving rise to multiple non-equilibrium steady states and abrupt jumps of up to...
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Malte Rösner (Bielefeld University)9/23/26, 4:00 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices4) Invited talk
Understanding how electron correlations intertwine with topological properties of a crystal structure is a central challenge in quantum materials research. In this talk, I will discuss the family of breathing kagome compounds Nb3X8 (X = F, Cl, Br, I) as a versatile platform for exploring this interplay. Building on our recent work, I will first show how monolayer Nb3Cl8 constitutes an almost...
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Freya Blekman (DESY & University of Hamburg, Germany)9/23/26, 4:00 PMM40 - Phenomenology and novel observables at future colliders4) Invited talk
Particle physics is at a tipping point after the discovery of the Higgs boson in 2012. Investigating the only ever observed spin-zero fundamental particle is of the highest priority and will take many years. A detailed study of the Higgs boson is linked to solutions to some of the burning open questions in particle physics today, while other big questions the LHC was designed to address remain...
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Andrea Hofmann (University of Basel)9/23/26, 4:00 PMM26 - 2D Material Research in the Central Europe Region4) Invited talk
Working with 2D materials, major limitations are imposed by device reproducibility and yield. The complexity in the fabrication gives rise to an immense number of parameters that have to be controlled. In bilayer graphene devices, the mastery of this parameter space is, to some extent, reflected by the opening of a uniform band-gap under the application of an electric field perpendicular to...
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Hadrien Kurkjian (LPTMC)9/23/26, 4:00 PMM12 - Recent Developments of the Polaron Theory4) Invited talk
I will introduce a new renormalisation scheme to construct the Landau quasiparticles of Fermi fluids. The scheme relies on an energy cutoff Λ which removes the quasi- resonant couplings, enabling the dressing of the particles into quasiparticles via a unitary transformation. The dynamics of the quasiparticles is then restricted to low- energy transitions and is fully determined by an effective...
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Dr Tobias Helbig (Stanford University)9/23/26, 4:00 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
The discovery of the bilayer nickelate La$_3$Ni$_2$O$_7$ as a high-temperature superconductor in bulk and thin film samples has raised fundamental questions about the origin of its unusually high transition temperature. While superconductivity emerges at high pressure or compressive strain, the normal state at ambient conditions displays spin stripe order with wavevector $Q=(\pi/2,\pi/2)$. In...
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Cristina Satriano (University of Catania)9/23/26, 4:00 PMM34 - Soft meets hard – interfaces and interactions4) Invited talk
Hybrid materials composed of soft organic components and hard inorganic nanostructures exhibit emergent properties governed by their interfaces and by confinement effects at the nanoscale. Understanding and controlling these soft–hard interfaces is therefore central to designing functional materials for biomedical and bioinspired applications.
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Here, we report a modular one-pot approach for... -
Stéphane Guillous (Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, UMR 6252, BP 5133, F- 14070 Caen Cedex 05, France)9/23/26, 4:00 PMM33 - Particle beams for material modification and analysis4) Invited talk
This study explores the effects of localized modifications induced by micrometric ion and electron beams. Using our unique state-of-the-art PELIICAEN set-up [1,2], our work sheds light on innovative surface structuring phenomena through the control of local disorder, charge deposition and deposited power density. These transformations, resulting from complex interactions between beam and...
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Tracy Northup (University of Innsbruck)9/23/26, 4:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems4) Invited talk
If two levitated particles are charged and separated by only a short distance, their motion may be appreciably coupled via their Coulomb interaction: cooling just one particle allows the second particle to be cooled as well. This sympathetic cooling is an enabling tool for trapped-ion metrology and computing and has also been demonstrated with nanoparticles in a linear Paul trap [1]. Here, I...
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Sandro Wieser (Institute of Materials Chemistry, TU Wien)9/23/26, 4:00 PMM21 - Recent Developments in Machine Learned Interatomic Potentials4) Invited talk
Dataset generation is a critical component for obtaining accurate machine-learned interatomic potentials (MLIPs). Molecular dynamics is widely used for reference data generation; however, it struggles to sample rare events such as transition states. This limitation is particularly problematic when fine-tuning foundation models, in which such configurations are typically underrepresented.
To...
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Mr Lauro Braz (Institute of Physics, University of São Paulo)9/23/26, 4:15 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Extensive experimental efforts have been dedicated to understand the low-pressure phase diagram of La$_3$Ni$_2$O$_7$ with the ultimate goal of connecting the low-pressure with the high-$T_c$ superconducting high-pressure phase diagram. The bilayer nickelate in its $C_4$ symmetry-breaking orthorhombic structural phase features a spin-density wave at $T_{SDW}\approx150$ K and another density...
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Zhenbang Dai (The University of Texas at Austin)9/23/26, 4:30 PMM12 - Recent Developments of the Polaron Theory4) Invited talk
Excitons, despite being neutral excitations, could interact with the hosting lattice and lead to self-localization, forming exciton polarons or self-trapped excitons. Exciton polarons have been suggested to actively participate in photocatalytic processes, give rise to broadband luminescence, and result in Stokes shift. Furthermore, they could serve as precursors to permanent defects and are...
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Gabriel B. Fuchs (TU Wien)9/23/26, 4:30 PMM34 - Soft meets hard – interfaces and interactions3) Contributed talk
Biological systems provide a rich source of functional principles that can be translated into technical designs. In this work, a plant tendril is taken as an example to demonstrate how observation, interpretation, and abstraction can lead to a realizable mechanical concept.
Starting from the geometric and functional characteristics of tendrils, a segmented compliant structure was developed...
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Prof. Igor Lerner (School of Physics, University of Birmingham, UK)9/23/26, 4:30 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
Tremendous experimental progress in ultracold atomic systems, isolated from the environment, led to the observation of many-body localization (MBL). The question remains, however, whether MBL can be observed in disordered electronic systems for which it was originally predicted. For this, decoupling from the lattice phonons is required, which is possible only in out-of-equilibrium systems....
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Uros Delic (TU Wien)9/23/26, 4:30 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Light is regularly used to trap polarizable objects, such as atoms, molecules, or dielectric nanoparticles. Light is also scattered from them, inducing an interaction mechanism known as light-induced dipolar forces (optical binding). This interaction enables quantum control of the collective motion of arrays of objects, leading to novel opportunities for quantum sensing, quantum metrology, and...
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Harriet Åhlgren (Uppsala University)9/23/26, 4:30 PMM33 - Particle beams for material modification and analysis4) Invited talk
2D membranes are promising building blocks in various fields, but their advanced use often requires functionalisation of their surface and the modification of their physiochemical properties. Functionalisation can be achieved with defects and the incorporation of foreign atomic species. Various methods are available for this, but major challenges still lay in the control of the defect types...
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Javier E. Villegas (Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay)9/23/26, 4:30 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
We demonstrate, through experiments (transport, electron microscopy & spectroscopy) and density functional theory (DFT), that a high mobility 2DEG can be optically switched on and off at a correlated oxides interface where such an electronic state does not naturally exist [1]. In particular, we find that near-ultraviolet light instantly creates a volatile 2DEG at the interface between SrTiO3...
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Michael Spannowsky (KIT, Karlsruhe, Germany)9/23/26, 4:30 PMM40 - Phenomenology and novel observables at future colliders4) Invited talk
Modern collider experiments produce increasingly complex and information-rich data sets, calling for new computational strategies for their interpretation. In this talk, I will discuss recent developments in data analysis methods aimed at improving the extraction of physical information from collision events, with an emphasis on machine learning, quantum machine learning, and related...
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Markus Eiberger (Institute of Materials Chemistry, TU Wien, Vienna, Austria)9/23/26, 4:30 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Molybdenum Carbide (Mo2C) has a variety of useful properties and thus a lot of possible applications. Mo2C has good catalytic properties similar to the platinum metal group i.e. H2 production, water gas shift reaction or ammonia synthesis. In literature different approaches are reported to deposit thin films of Mo2C on substrates. Most commonly used are CVD systems with H2/Ar/CH4 flow and...
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Martin Brehm (Paderborn University, Warburger Straße 100, 33098 Paderborn, Germany)9/23/26, 4:30 PMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
We present Prokyon [1], a free software library that enables on-the-fly machine learning (ML) of interatomic potentials for atomistic simulations that can be efficiently coupled to existing electronic structure packages. Apart from the energy and forces, our model also predicts the uncertainty in these quantities, which is a major advantage of the Gaussian process (GP) approach used here when...
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Federico Mazza (TU Wien)9/23/26, 4:30 PMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Strange metal behavior emerges across a wide range of material platforms and remains a central open problem in correlated quantum matter [1]. Beyond the hallmark linear-in-temperature electrical resistivity, it is characterized by entropy accumulation, a discontinuous change in Fermi volume, and energy-over-temperature scaling in dynamical susceptibilities [2]. Recent studies suggest that...
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Yuxi Zhang (Technische Universität Wien)9/23/26, 4:30 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Motivated by the experimental discovery of superconductivity in the trilayer Ruddlesden-Popper nickelate superconductor $\mathrm{La}_{4}\mathrm{Ni}_{3}\mathrm{O}_{10}$, we investigate the electronic structure for both the ambient pressure and high pressure phase. A two-orbital three-layer minimum model is constructed from maximally-localized Wannier orbitals of $\mathrm{Ni}$ $e_{g}$ character....
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Péter Makk (Budapest University of Technology and Economics, Dept. of Physics)9/23/26, 4:30 PMM26 - 2D Material Research in the Central Europe Region4) Invited talk
In van der Waals heterostructures the layer distance strongly affects the interaction between the layers. Therefore, pressure is an ideal tool to engineer the band structure of van der Waals materials [1].
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Here I will show examples for the versatility of this method. First, I will show, how in WSe2/Gr structures spin-orbit coupling can be boosted using hydrostatic pressure [2-4]. I will also... -
Dr Markus Hartmann9/23/26, 4:45 PMM34 - Soft meets hard – interfaces and interactions3) Contributed talk
Bone is a fascinating material fulfilling mechanical, hematopoiesis, mineral storage and hormonal functions. A constant supply of nutrients and mineralization precursors is fundamental to its physiological function with the osteocyte lacuno-canalicular network (LCN) as one of the key players [1]. The osteocytes are embedded in the bone matrix with the cell body housed in lacunae and their...
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Aaron Flötotto (Technische Universität Ilmenau)9/23/26, 4:45 PMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
The memristive properties of transition metal dichalcogenides, such as MoS₂, have attracted significant attention and have recently been linked to the dynamics of sulfur vacancies [1, 2]. However, the inherently slow kinetics of sulfur vacancy migration in MoS₂ renders direct ab initio simulations computationally infeasible.
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To overcome this limitation, we train both graph neural network... -
Martin Nastran (Technische Universität Wien)9/23/26, 4:45 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Efficient lubrication is essential to reduce energy losses, minimise wear, and extend the lifetime of mechanical components. Solid lubricants, particularly layered two-dimensional (2D) materials, have attracted significant attention due to their low shear strength and unique interfacial properties. However, practical implementation remains challenging, as particulate lubricants exhibit poor...
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Zhan Wang (Institute of Physics, Chinese Academy of Sciences)9/23/26, 4:45 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Bilayer nickelate La$_3$Ni$_2$O$_7$ offers a new setting to study the interplay between Mottness, multi-orbital physics, and superconductivity. We show that a bilayer Hubbard model supports a molecular Mott state driven by strong interaction and interlayer coupling, which becomes self-doped through charge transfer to higher-energy bands as the interlayer coupling is reduced. Guided by this...
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Andrea Vinante (CNR-Istituto di Fotonica e Nanotecnologie, Trento)9/23/26, 4:45 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
I will describe the development and characterization of a spinning rotor based on a Meissner-levitated ferromagnetic microsphere and a synchronous driving technique. We have achieved rotational frequencies above 2 MHz, close to the disintegration limit. We have measured a damping rate well below 1E-6 Hz in vacuum, corresponding to rotational quality factor above 1E13. Finally, we have...
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Jiangfan Wang9/23/26, 5:00 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
The discovery of superconductivity in Ruddlesden-Popper bilayer nickelates has drawn enormous attention. We provide a unified theoretical explanation based on the two-component scenario for many experimental observations on bulk and thin film La$_3$Ni$_2$O$_7$, including the different superconducting transition temperatures, the nontrivial normal states, the effects of doping, and the Kondo...
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Dragana Popovic (National High Magnetic Field Laboratory, Florida State University)9/23/26, 5:00 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
The mechanisms that quantum systems can use to avoid thermalization and retain information in their local degrees of freedom have been a subject of intense research interest for both new fundamental physics and novel applications. These mechanisms, for example, are of great importance for quantum technologies since they can be used to build quantum memory devices. This talk will discuss...
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Barbara Maria Mayer (Faculty of Physics and Astronomy, University of Uppsala, Sweden;)9/23/26, 5:00 PMM33 - Particle beams for material modification and analysis3) Contributed talk
Metal structures with an ultimate thickness of one atomic layer (metallenes) have attracted increasing research interest due to their low dimensionality and unique properties, including ultrahigh carrier mobility and enhanced catalytic activity, making them promising candidates for electrocatalysis, sensing, and next-generation electronics [1].
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However, realizing metallenes is hindered by... -
Justin Wells (University of Oslo)9/23/26, 5:00 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices4) Invited talk
Background: In 2013, we reported strong electron-phonon coupling (EPC) in the σ-bands of graphene [1]. This observation was highly controversial at the time, and attempts were made to dismiss it as a consequence of photoemission matrix elements instead [2]. We endeavoured to clear up this controversy by i) theoretical support and ii) manipulating the photoemission matrix elements by measuring...
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Dr Sait Baris Guner (Ankara University)9/23/26, 5:00 PMM12 - Recent Developments of the Polaron Theory3) Contributed talk
The interaction between engineered defect structures and the superconducting flux line lattice plays an important role in determining the macroscopic electrodynamic properties of high-Tc cuprates. In this work, we investigate the effects of artificial pinning architectures in top-seeded melt-grown (TSMG) YBCO bulk superconductors. Micro-holes were introduced on the sample surfaces using...
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Prof. Aline Ramires (TU Wien)9/23/26, 5:00 PM1M02 - Heavy quasiparticles in heavy fermion compounds4) Invited talk
UTe$_2$ has been the focus of numerous experimental and theoretical studies in recent years, as it is recognized as one of the few odd-parity bulk superconductors. Its surface has also been probed, revealing charge density wave (CDW), pair density wave, and time-reversal symmetry breaking (TRSB). Here, we propose that the interplay between bulk and surface order parameters in UTe$_2$ may be...
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Ciprian Padurariu (Ulm University, Ulm, Germany)9/23/26, 5:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Resolved-sideband cooling is a standard technique in cavity optomechanics enabling quantum control of mechanical motion, but its performance is ultimately limited by quantum backaction heating. This fundamental effect imposes a limit on the minimum achievable mechanical phonon number, establishing a finite-temperature floor regardless of the applied cooling strength.
In this talk, we...
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Simon Plätzer (Universität Siegen)9/23/26, 5:00 PMM40 - Phenomenology and novel observables at future colliders3) Contributed talk
The simulation of high energy particle reactions is central to the design and interpretation of current and future particle collider experiments. In this talk I will present the state of the art of such event generator simulations, and the significant challenges posed by future experiments and analysis techniques. A novel role is played by the quest for a detailed understanding of final states...
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Marián Janík (Slovak Academy of Sciences; Institute of Science and Technology Austria)9/23/26, 5:00 PMM26 - 2D Material Research in the Central Europe Region4) Invited talk
Charges and spins confined in semiconductor quantum dots coupled to microwave photons provide a versatile platform for quantum computation and quantum optics, but coupling strengths are fundamentally limited by the weak electric dipole moment. In this context, heterostructures hosting low-dimensional carrier systems offer a promising route to scalable and tunable architectures.
Here, we...
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Arno Frank (Boku University)9/23/26, 5:00 PMM34 - Soft meets hard – interfaces and interactions3) Contributed talk
Mechanical properties of biological materials are strongly dependent on the nano- and microstructure of the materials. By measuring the orientation of fibers or nanocrystallites it is possible to gain insight into their physical properties. Standard X-ray diffraction is a well-established technique for this kind of measurements but needs multiple measurements involving sample rotation to...
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Oleg Yevtushenko (nextnano GmbH)9/23/26, 5:00 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
After the seminal discovery of two-dimensional (2D) topological insulators (TIs) in CdTe/HgTe single-layer quantum wells (QWs), these fascinating systems have emerged as promising candidates for various devices in topological electronics and spintronics. One of the key limiting factors for practical applications of TIs is a small band gap, which results in low operating temperatures, usually...
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Toma Susi (University of Vienna)9/23/26, 5:00 PMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
Harmonic phonon modes are not only critical for understanding the thermal properties of materials, but also desirable for accurate transmission electron microscopy simulations within the widely-used frozen-phonon approach. Although uncorrelated random displacements are typically sufficient for modeling diffuse backgrounds [1], the true correlated phonons may be of relevance for techniques...
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David Sanchez-Manzano (Universidad Complutense de Madrid)9/23/26, 5:15 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Characterizing the dimensionality of the superconducting state in infinite-layer (IL) nickelates is essential for understanding its nature. Most studies have addressed this by examining the anisotropy of the upper critical fields. However, the dominance of Pauli paramagnetic effects over orbital effects complicates the interpretation of these experiments in terms of dimensionality. Here, we...
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Dr MANOJ KUMAR RAJBHAR (Université Paris-Saclay, CNRS/IN2P3, IJCLab and Laboratoire CRISMAT (UMR 6508), Universite de Caen Normandie, 14050 Caen, France)9/23/26, 5:15 PMM33 - Particle beams for material modification and analysis3) Contributed talk
Ion implantation at 500°C into bcc Fe–Cr model alloys offers a controlled non-equilibrium platform to dissect the physics of Y–Zr–O nano-oxide nucleation and evolution in oxide-dispersion strengthened (ODS) steels for nuclear applications, simultaneously delivering chemical supersaturation of low-solubility Y/Zr solutes and high-damage collision cascades within a ~100 nm surface layer that...
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Stefan Schrems (Universität Wien, Fakultät für Physik)9/23/26, 5:15 PMAMP: Atoms, Molecules, Quantum Optics and Plasmas3) Contributed talk
Matter-wave interferometry has recently been demonstrated for particles as massive as metal nanoclusters exceeding 170kDa. Extending this frontier into the 10-50MDa regime of dielectric or biological nanoparticles is now a compelling open challenge in quantum physics, aiming for the preparation of Schrödinger cat states at unprecedented mass scales. Future interferometry experiments in this...
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Mr Florian Unterkofler (Institute of Solid State Physics, TU Graz)9/23/26, 5:15 PMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
With the rise of machine-learned interatomic potentials, simulations have become an even more crucial tool for predicting material properties. We previously achieved accurate predictions of experimentally observed thermal conductivity of acenes, using system-specific, machine-learned Moment Tensor Potentials (MTPs) within a lattice dynamics approach.[1] To obtain a complementary real-space...
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Mr Vasilii Vasilchenko (Université catholique de Louvain)9/23/26, 5:15 PMM12 - Recent Developments of the Polaron Theory3) Contributed talk
Self-trapped polarons are quasiparticles that form in materials when a free electron or hole becomes localized within a self-induced lattice distortion. This autolocalization can modify the charge transport properties of a system, leading to a transition from band-like transport to thermally activated hopping.
Among first-principles approaches to polarons, the Variational Polaron...
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duifje van egmond9/23/26, 5:20 PMM40 - Phenomenology and novel observables at future colliders3) Contributed talk
The description of the Higgs mechanism as a spontaneous breaking of gauge symmetry has been hugely successfull in describing the electroweak sector. Despite this success, it is theoretically inconsistent and leads to explicit gauge dependence beyond the mass determination. The Frohlich-Morchio-Strocchi (FMS) framework maintains the successfull mass determination of the textbook Higgs...
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Pratap Raychaudhuri (Tata Institute of Fundamental Research, Mumbai)9/23/26, 5:30 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
Superconducting microstrip resonators, which leverage kinetic inductance to probe electrodynamics, are sensitive tools for studying superconducting thin films at microwave frequencies. However, extracting the absolute superconducting penetration depth from these measurements remains challenging. In this talk, I will present a hybrid method to determine the absolute value of over a wide...
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Johannes Jeryczynski (TU Wien)9/23/26, 5:30 PMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Since first being reported, the growth of two-dimensional (2D) metal carbides such as Mo2C via chemical vapour deposition (CVD) has received continuous attention from the research community. However, due to the complicated growth process involving a liquid metal catalyst, as well as process conditions also suitable for the concurrent growth of graphene, a multitude of different morphologies,...
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Matheo Ablasser9/23/26, 5:30 PMM26 - 2D Material Research in the Central Europe Region3) Contributed talk
Rhombohedral multilayer graphene (RMG) exhibits a rich phase diagram with a variety of magnetic, superconducting, and topological phases, making it a highly interesting material for current condensed matter research. In addition, the introduction of a moiré pattern can reveal further emergent phenomena. For example, RMG with an imposed moiré potential by an hBN substrate has been shown to host...
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Pietro Oreglia (University of Trento)9/23/26, 5:30 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Studying the boundary between quantum and classical physics in macroscopic systems is a central challenge in modern physics. In this context, levitated systems are becoming increasingly important, as they provide excellent isolation and avoid clamping losses, enabling improved quantum control of mechanical motion compared to traditional micro- and nanomechanical resonators. Beyond optical...
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Alfredo Pasquarello (EPFL)9/23/26, 5:30 PMM12 - Recent Developments of the Polaron Theory4) Invited talk
The piecewise linearity condition is a property satisfied by the exact density functional and has been found to yield band gaps in accord with experiment when imposed to hybrid functionals [1,2]. Here, we address the self-interaction in relation to polarons in density functional theory. The self-interaction can be corrected by focusing on its one-body form like it appears in Hartree-Fock...
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Wenfeng Wu9/23/26, 5:30 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
Recent experimental discoveries of infinite- and finite-layer nickelate superconductors have highlighted the importance of a single-band $d_{x^2-y^2}$ Fermi surface for enabling unconventional superconductivity similar to cuprates. Motivated by this, we use density functional theory (DFT) and dynamical mean-field theory (DMFT) to identify two infinite-layer fluorides—KNiF$_2$ and KPdF$_2$—as...
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M. Valiska (Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic)9/23/26, 5:30 PM1M02 - Heavy quasiparticles in heavy fermion compounds4) Invited talk
UTe$_2$ is one of the most prominent candidate materials for spin-triplet and potentially topological superconductivity. Its superconducting phase diagram is exceptionally rich, with multiple field- and pressure-induced phases whose topology remains intensely debated. A particularly important unresolved issue concerns the high-field superconducting regime for magnetic field applied along the...
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Lukas Legenstein (Montanuniversität Leoben)9/23/26, 5:30 PMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
Polymorphism, the ability of molecules to form solid phases with slightly different arrangements, profoundly influences the material properties of molecular crystals in both pharmaceutics and organic electronics. Even minor variations in molecular packing can lead to vastly different charge transport properties in organic semiconductors. Indicative of this phenomenon are also subtle...
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Michael Kendler9/23/26, 5:30 PMM33 - Particle beams for material modification and analysis3) Contributed talk
Electron signal amplifiers such as microchannel plates (MCPs) or channeltron electron multipliers (CEMs) play an important role in particle detection and beam diagnostics across a wide range of applications in industry and R&D. To collect the amplified signals, various types of anodes are used with these electron multipliers to extract spatial and/or temporal information from the charge clouds...
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Georg Wieland (University of Graz)9/23/26, 5:40 PMM40 - Phenomenology and novel observables at future colliders3) Contributed talk
Gauge invariance requires physical states to be composite, even in the weak sector of the Standard Model (SM). The Fröhlich-Morchio-Strocchi (FMS) mechanism resolves this subtlety and predicts additional Higgs contributions in SM processes. In this talk, we explore the FMS mechanism on the lattice by simulating a proxy theory with vectorial leptons. We investigate the physical spectrum of this...
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Eric Jacob (TU Wien)9/23/26, 5:45 PMM07 - Nickelate Superconductors: A New Platform for Unconventional Cooper-Pairing3) Contributed talk
The infinite-layer cuprate superconductors are the prototypical material family for exploring unconventional superconductivity and correlated electronic phenomena. We present a numerical study using the dynamical vertex approximation [1] of a three-band Emery model [2] that goes beyond the one-band Hubbard description. We find (i) a pseudogap [3] and (ii) a strong dependence of the band...
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Felix Blödorn (Institut für angewandte Physik, TU Wien)9/23/26, 5:45 PMM33 - Particle beams for material modification and analysis3) Contributed talk
The electron-induced crosslinking of self-assembled monolayers (SAMs) on surfaces can lead to the formation of mechanically stable carbon nanomembranes (CNMs). These membranes have applications in waterfiltration and can be functionalised to be used in biosensing [3]. The formation mechanism from a SAM to a CNM is still elusive [1] and the atomistic structure of the final CNM is also not...
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479. Machine-Learning Supported Reaction Mechanism Exploration of cis-trans Isomerisation in RetinalDr Kai Töpfer (Freie Universität Berlin)9/23/26, 5:45 PMM21 - Recent Developments in Machine Learned Interatomic Potentials3) Contributed talk
Rare events such as chemical reaction are transitions across an energy barrier. To rationalize the mechanism of such rare events and calculating their reaction rates, the search for an optimal reaction coordinates has long been very active field of research.[1] Using the minimum energy path (MEP) as reaction coordinate simply neglects entropic contributions and dynamic effects. Alternatively,...
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Benjamin Stickler (Ulm University)9/23/26, 5:45 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Optically levitating dielectric nanoparticles in ultra-high vacuum, where their motion can be cooled into the deep quantum regime, provides a promising platform for force and torque sensing and for high-mass tests of quantum physics. In this contribution, I will discuss recent results on the coupled dynamics of co-levitated nanoparticles interacting via optical binding and via electrostatic...
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Manfried Faber9/24/26, 10:30 AMM13 - Localization Dynamics in Matter and Waves4) Invited talk
Millikan's famous experiment revealed a contradiction with Maxwell's
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electrodynamics, which became known as the "4/3 problem" and the
"radiation reaction problem". From today's perspective, these issues
seem to have been insufficiently understood. The actual origin of the
problems lies in the instability of the classical electron.
Historical approaches to solving the 4/3 problem require... -
Prof. Konstanze Zwintz (Universität Innsbruck)9/24/26, 10:30 AMM38 - Astronomy and Astrophysics across Austria4) Invited talk
At the Institute for Astro- and Particle Physics of the Universität Innsbruck, astrophysical research revolves around galactic and extragalactic topics including different phases of stellar evolution, stellar oscillations, massive stars, galaxy formation and evolution, and cosmology.
In my talk I will first give a short overview about the research groups at my institute. I will then...
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Karlo Penc (HUN-REN Wigner Research Centre for Physics)9/24/26, 10:30 AMM25 - Magnetism Research in the Central Europe Region4) Invited talk
Frustrated magnets provide fertile ground for unconventional orders and emergent excitations. In particular, chiral states break time-reversal symmetry and host emergent gauge fluxes that can endow quasiparticles with nontrivial topology~[1,2,3]. Here, we explore two complementary aspects: topological magnon transport and exactly solvable spin models.
On the triangular lattice, we study a...
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Benjamin Jungfleisch (TU Graz/ University of Delaware)9/24/26, 10:30 AMM42 - Advances in Magnonics4) Invited talk
Artificial spin systems composed of interacting nanomagnets provide a model platform to investigate collective phenomena in designed magnetic lattices. In these systems, magnetic microstates can be mapped onto effective spin-lattice models, enabling direct experimental access to frustration, degeneracy, and emergent behavior in complex energy landscapes [1].
Beyond their static properties,...
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Tommaso Giovannini (University of Rome Tor Vergata)9/24/26, 10:30 AMM18 - Light-driven Processes at Interfaces4) Invited talk
The optical response of plasmonic nanostructures can be tuned by varying their shape, size, and chemical composition [1]. Peculiar phenomena arise when a molecular system is adsorbed on the surface of plasmonic materials, ranging from surface-enhanced spectroscopies to photocatalysis [2]. The accurate description of the optical properties of the plasmonic substrates is thus crucial for an...
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Dr Tetsuo Hanaguri (RIKEN CEMS)9/24/26, 10:30 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Superconducting properties can be controlled by various external parameters, such as doping and pressure, which modify low-energy electronic states. In particular, materials hosting singularities in the density of states near the Fermi level are expected to be susceptible to small changes in external parameters. Here, we employ ultralow-temperature scanning tunneling microscopy and...
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Prof. Moshe Schechter (Ben Gurion University)9/24/26, 10:30 AMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
Structural tunneling two-level systems (TLSs), generically present in amorphous solids and at interfaces, are dominant source of noise and decoherence in quantum devices. Mitigation of their deleterious effects is thus of utmost importance in the quest of improving performance of superconducting resonators and qubits. Here I will discuss the effect of periodic biasing of the TLSs in...
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Rolf Schäfer9/24/26, 10:30 AMM31 - Metal and metal oxide particles for catalysis and sensorics4) Invited talk
Metal clusters consisting of about a dozen atoms exhibit many properties different from those of the corresponding bulk material, which is due to the strong influence of the particle surface as well as to quantum size effects. It is therefore of great interest to study the evolution of their geometric and electronic structure as a function of size. The presentation introduces our approaches...
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Alessandro Sala (CNR - Istituto Officina dei Materiali (IOM))9/24/26, 10:30 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices4) Invited talk
Diboron trioxide (B$_2$O$_3$) represents a peculiar case among polymorphic oxides, for its vitrified state presents superstructural units – planar ring-shaped boroxol groups, B$_3$O$_6$ – that are totally absent in its crystalline polymorphs. In fact, the crystallization of B2O3 can occur only under applied pressure, where the boroxol groups can be disrupted and the triangular BO3 building...
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Peter Schurtenberger (Lund University)9/24/26, 10:30 AMM37 - Emergent Behavior in Soft and Living Matter4) Invited talk
Protein-protein interactions are known to be often highly anisotropic due to the non-spherical protein shape and inhomogeneities in the distribution of charges and hydrophobic areas on the protein surface. The key static and dynamic properties of concentrated protein solutions and mixtures as those existing in the interior of living cells or used in pharmaceutical formulations are thus...
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Prof. Zoltan Haiman (ISTA)9/24/26, 10:55 AMM38 - Astronomy and Astrophysics across Austria4) Invited talk
Binary black holes (BHBs) embedded in dense gas hold the promise of "multi-messenger astrophysics": when they are detected both through gravitational waves (GWs) and electromagnetic (EM) observations, they will enable novel science. This is true both for massive BHBs, whose GWs will be detectable by the future LISA satellite and by on-going pulsar timing arrays (PTAs), as well as for...
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Prof. Ewald Janssens (KU Leuven)9/24/26, 11:00 AMM31 - Metal and metal oxide particles for catalysis and sensorics4) Invited talk
Beam deposition of mass-selected bimetallic clusters produced in a laser ablation source provides a powerful platform to investigate cluster–surface interactions and to establish structure–activity relationships in well-defined catalytic systems. The combination of controlled gas-phase growth, soft landing, and detailed post-deposition characterization enables systematic studies of structural,...
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Prof. Cristiano De Michele ("Sapienza" Università di Roma)9/24/26, 11:00 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Biological macromolecules, such as DNA duplexes, proteins and polypeptides, comprise many degree of freedom and live in a water environment. Numerical methods have been widely used to study these biological systems, but many of these methods, such as atomistic molecular
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dynamics, are rather demanding if many or very large biomolecules are considered. To overcome these limitations, extremely... -
Michael Pepper (University College London)9/24/26, 11:00 AMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
Confinement of a 2D electron gas to form a 1D system allows observation of conductance quantization with values of 2ne2/h where the integer n is 1,2,3,4 and the factor of 2 is spin degeneracy. This formula is based on spatial quantization and ballistic conduction. However, in 1996 a deviation from this simple behaviour occurred when a conductance plateau, or structure, was found near...
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Dirk Grundler (EPFL)9/24/26, 11:00 AMM42 - Advances in Magnonics4) Invited talk
Nanotechnology in magnonics advanced considerably in recent years and allowed for on-chip excitation of coherent magnons with wavelengths down to about 50 nm [1]. Still further progress is needed to optimize the performance of magnons in integrated circuits. We explore two routes to advance nanomagnonics and enhance the frequency bandwidth of on-chip excited magnons. On the insulating...
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Nives Strkalj (Institute of Physics, Zagreb)9/24/26, 11:00 AMM26 - 2D Material Research in the Central Europe Region4) Invited talk
Controlling ferroic order at the nanoscale is central to the development of next-generation low-power electronic and spintronic devices. I will present our recent work on interface-engineered phenomena in complex oxide heterostructures based on BaTiO₃ and La₀.₆₇Sr₀.₃₃MnO₃. Through interface charge design, we realize switchable polar states down to a single unit cell of BaTiO₃ in superlattice...
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stephen nagaraju myakala (Technical University of Vienna)9/24/26, 11:00 AMM18 - Light-driven Processes at Interfaces3) Contributed talk
Due to the ongoing global warming and the upcoming energy crises, the exploitation of alternative, renewable energy sources has become a major focus of materials chemistry. The ultimate solution for sustainable energy lies in the concept of solar fuels – commodity chemicals that can be generated from nothing but sunlight and abundant feedstock through heterogeneous photocatalysis. The...
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Dr Franz Herling (ICN2)9/24/26, 11:00 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Van der Waals (vdW) heterostructures enable tailored electronic and magnetic phases by stacking atomically thin layers with pristine interfaces [1–2].
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Here, we investigate fully 2D Cr₂Ge₂Te₆/WTe₂ heterostructures and identify a strong enhancement of ferromagnetism in Cr₂Ge₂Te₆ (CGT). Magnetotransport measurements across multiple devices with WTe₂ thicknesses ranging from monolayer to bulk... -
Christoph Heil (TU Graz)9/24/26, 11:00 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
The symmetry of the superconducting order parameter of Sr2RuO4 has been debated for three decades. Its structural similarity to the cuprates and an early, now disproven consensus on odd-parity pairing entrenched the assumption that the pairing is governed by spin fluctuations, leaving the role of phonons largely unexplored. In this talk I revisit that assumption from first principles....
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Rudolf Golubich9/24/26, 11:00 AMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
We determine the interaction potential of a solitonic Positronium in the singlet state, modeled as an SU(2) field, using improved lattice simulations of two solitons at varying separations. The potential is extracted from the energy of the two-soliton configuration as a function of distance. At large separations, the interaction reproduces the classical Coulomb potential quantitatively up to...
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Agnes Valenti (Flatiron Institute, Center for Computat Quantum Physics, New York, NY 10010 USA)9/24/26, 11:15 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
Two-dimension van-der-Waals materials provide a versatile platform with a high degree of tunability, that has led to a multitude of realizations of correlated and topological phases in the recent years. However, theoretical modeling remains a challenge: Strong correlations call for tools beyond mean-field theory. In this talk I will explain how variational Monte Carlo, in particular neural...
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Flavio Scipione (TU Wien)9/24/26, 11:15 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
We introduce a patchy polymer model as a minimal coarse-grained representation of G4 multimers. G4 multimers are chains of G-quadruplexes, which are stable stacks of guanine-rich tetrads. Because they regulate key genomic processes, G4 multimers are promising targets for designing selective therapeutic ligands. A key open question is how ligand binding modifies the mechanical properties of G4...
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Anton Tamtögl (Graz University of Technology)9/24/26, 11:15 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Molecular adsorption and mobility on two-dimensional materials provide sensitive probes of nanoscale energy dissipation and adsorbate–substrate interactions. In particular, comparing structurally similar but electronically distinct systems such as graphene and hexagonal boron nitride (h-BN) offers a route to understanding how surface polarity, electronic structure, and substrate coupling...
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Jon Scouten (University of Potsdam)9/24/26, 11:15 AMM18 - Light-driven Processes at Interfaces3) Contributed talk
Light-driven charge transfer at metal–molecule interfaces depends on nonequilibrium electron dynamics in the nanoparticle and on the contact electronic structure. We present a model for a sulfur-linked molecule on a gold nanoparticle dimer, treating the nanoparticle as a geometry-aware metallic electron system and the local Au–S–molecule region as a finite metal–molecule contact. A...
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samo kralj (Institute Jozef Stefan)9/24/26, 11:15 AMM13 - Localization Dynamics in Matter and Waves4) Invited talk
Topological defects (TDs) appear in all systems reached via a symmetry breaking phase transition and are consequently observed at all physical scales, including particle physics, condensed matter and even cosmology. Liquid crystals (LCs) are particularly adequate media to study TDs because they exhibit a rich variety of qualitatively different TDs and in them defects could be relatively easily...
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Manuela Temmer9/24/26, 11:20 AMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
Coronal Mass Ejections (CMEs) are massive eruptions of plasma and magnetic fields from the Sun, capable of impacting Earth's space weather environment. Understanding their evolution from the Sun to interplanetary space requires connecting solar-origin observations to in-situ measurements. This talk covers investigations on the relationships between CME properties, such as speed, magnetic field...
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Prof. Dr. Gereon Niedner-Schatteburg (RPTU Kaiserslautern-Landau)9/24/26, 11:30 AMM31 - Metal and metal oxide particles for catalysis and sensorics3) Contributed talk
Isolated gas phase clusters of atoms and molecules serve as well established proxys for the characterization of elementary steps and intermediates within complex reactions at ambient or industrial conditions. In this context, the charge states of such clusters are subject of debate ever since. We have developed and applied a cryo trapping technique [1] that allowed us to characterize size...
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Frantisek Karlicky (University of Ostrava)9/24/26, 11:30 AMM26 - 2D Material Research in the Central Europe Region4) Invited talk
We review here our achievements in the field of excitons in van der Waals (vdW) heterostructures of two-dimensional (2D) materials from the last few years. Electron-electron and electron-hole (exciton) effects are specifically pronounced in 2D materials and their vdW heterostructures due to weak dielectric screening from the environment. These heterostructures offer a versatile platform for...
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Simon Leitner (Montanuniversität Leoben)9/24/26, 11:30 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
Gate dielectrics are a central materials challenge for reliable 2D electronics, where device behaviour is strongly governed by interfacial quality and high-field stability. While hexagonal boron nitride (hBN) is widely used as the benchmark van der Waals dielectric, layered silicates offer an attractive alternative due to their compositional versatility, abundance, and robustness. Here, we...
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Rohit Chikkaraddy (University of Birmingham, UK)9/24/26, 11:30 AMM18 - Light-driven Processes at Interfaces4) Invited talk
Near-field interactions provide a powerful route to mediate energy transfer between otherwise weakly coupled excitations. Here we demonstrate mid-infrared (MIR) donor–acceptor energy transfer and subsequent upconversion to visible emission enabled by ultrasmall plasmonic nanogap cavities [1,2]. The platform consists of metal–insulator–metal (MIM) resonators with gap sizes below 2 nm that...
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Franz Vilsmeier (University of Vienna)9/24/26, 11:30 AMM42 - Advances in Magnonics4) Invited talk
Magnonic devices exploit spin waves - the collective excitations of ordered magnets - for wave-based information processing without charge flow. Their performance hinges on a high-dimensional design space spanning geometry, local material parameters, magnetic field landscape, excitation, and nonlinearity, much of which is inaccessible to manual parameter studies.
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Inverse design reverses the... -
Zvi Ovadyahu (Racah Institute of Physics, The Hebrew University Jerusalem ISRAEL)9/24/26, 11:30 AMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
Films of amorphous GeSbTe and GeTe exhibit nonequilibrium transport anomalies when subjected to thermal cycling. These presumably reflect iso-thermal structural changes. Some of these temperature-driven changes are reversible, suggestive of a phase-transition occurring at the amorphous phase. Noise measurements are consistent with this picture while revealing a qualitative difference between...
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Jaime Rumeu Ozores (Laboratorio de Bajas Temperaturas y Altos Campos Magnéticos, Departamento de Física de la Materia Condensada, Instituto Nicolás Cabrera and Condensed Matter Physics Center (IFIMAC), Unidad Asociada UAM-CSIC, Universidad Autónoma de Madrid , E-28049 Madrid, Spain)9/24/26, 11:30 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
Cryogenic Scanning Tunneling Microscopy (STM) has been instrumental in the development of scanning probe microscopies. The addition of a magnetic field opens new prospects, such as the observation of vortex lattices in superconductors or of Landau quantization. For the latter, it is of particular importance to decrease as far as possible the size of the STM. Although efforts made during past...
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Łukasz Baran (Maria Curie-Sklodowska University in Lublin)9/24/26, 11:30 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Selective formation of a cubic diamond is challenging due to the formation of competing phases possessing similar free energy. Examples of such are: stacking hybrids of interwoven hexagonal and cubic diamonds with (i) its liquid phase, (ii) arrested glasses, or (iii) clathrates, all depending on the relative patch size, despite being within the single association regime [1, 2]. The necessity...
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Manuela Temmer9/24/26, 11:32 AMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
Despite its role as the primary model for mapping solar wind sources, the Potential Field Source Surface (PFSS) model consistently fails to replicate the observed boundaries and internal topologies of coronal holes (CHs). To address this, we present a comprehensive statistical analysis of 702 observed CHs from 2010–2019, contrasting their PFSS-modeled magnetic structure with those of Quiet Sun...
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Yara De Leo (INAF- Astrophysical Observatory of Catania (Italy) and University of Graz (Austria))9/24/26, 11:44 AMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
The Solar Orbiter mission has significantly advanced the study of the solar corona and its connection to the heliosphere through its unique orbital configuration and state-of-the-art instrumentation. Among its remote-sensing payload, the SolO/Metis coronagraph provides, for the first time, simultaneous two-dimensional imaging of the extended solar corona in visible light (VL) and ultraviolet...
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Dr Markus Ostermann (Vienna University of Technology (TU Wien))9/24/26, 11:45 AMM27 - 2D Materials-Synthesis, Surfaces, Dynamics, Devices3) Contributed talk
MXenes are a class of two-dimensional materials attracting considerable attention owing to their distinctive physical and chemical properties, which are governed by their surface terminations (Tx). Titanium carbide (Ti3C2Tx) is the most extensively studied MXene, having demonstrated exceptional electrical conductivity, electromagnetic shielding, photonic, and tribological properties.[1]...
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Natasa Adzic (Institute of Physics Belgrade, University of Belgrade, Serbia)9/24/26, 11:45 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Recent studies of electrostatics in colloidal systems have increasingly addressed the complexity that inhomogeneous surface charge distributions introduce into self-assembly processes. However, approaches based on extensions of DLVO-like models remain valid only within the mean-field regime and are therefore mainly applicable to environments dominated by monovalent salts, [1]. In the work we...
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Luka Mesarec (Assistant professor)9/24/26, 11:45 AMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
Topological defects (TDs) arise almost inevitably during phase transitions that involve continuous symmetry breaking. Owing to their topological nature, their essential characteristics are largely independent of microscopic system details, leading to a wide range of universal behaviors. In this work, we present a numerical investigation of TDs in effectively two-dimensional closed soft films...
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Alexander Genest (nstitute of Materials Chemistry, TU Wien)9/24/26, 11:45 AMM31 - Metal and metal oxide particles for catalysis and sensorics3) Contributed talk
Metal nanoparticles offer a variety of largely independent handles for tailoring catalytic performance - size, shape, and their interaction with the support. DFT calculations, mostly carried out with VASP, allow us to explore this design space, to connect macroscopic activity as well as selectivity trends to specific surface motifs at the atomic scale.
Using CO as probe molecule at Pd, the...
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Joseph Betouras (Loughborough University, UK)9/24/26, 11:45 AMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
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Sowmya Krishnamurthy (University of Graz, Austria)9/24/26, 11:56 AMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
Radial velocity (RV) searches for small exoplanets around Sun-like stars are increasingly limited by activity-driven RV jitter. In stars with near-solar magnetic activity, bright faculae dominate this variability, yet their disk-integrated RV impact is poorly constrained. In this study, we measure their spectroscopic imprint with a physically consistent forward model, using the Sun as a...
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Botond Tyukodi (Babes Bolyai University)9/24/26, 12:00 PMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Recent advances in synthetic methods enable designing subunits that self-assemble
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into structures with precise, finite sizes and well-defined architectures, but yields are
frequently suppressed by the formation of off-target metastable structures. Increasing
the complexity (the number of distinct subunit types) can inhibit off-target structures,
but leads to slower kinetics and higher... -
Emil Siuda (Adam Mickiewicz University in Poznań)9/24/26, 12:00 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
The interplay between superconductivity and magnetism remains one of the central problems of condensed matter physics, particularly in nanoscale systems where strong electron correlations play a dominant role. A prominent example of interaction-driven magnetism is Nagaoka ferromagnetism, which arises purely from electron correlations in nearly half-filled systems [1,2], and which has recently...
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Lukas Hoermann (University of Vienna)9/24/26, 12:00 PMM18 - Light-driven Processes at Interfaces3) Contributed talk
The vibrational dynamics of molecules in non-contact junctions depend critically on the geometric structure and electronic interactions between molecule and substrate. Vibrations excited by external stimuli dissipate energy into substrate electrons and phonons, affecting spectral linewidths, vibrational lifetimes, and the coupling between molecular and substrate phonons. We present a...
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Mr Davit Petrosyan (Department of Materials, ETH Zurich, CH-8093 Zurich, Switzerland)9/24/26, 12:00 PMM42 - Advances in Magnonics3) Contributed talk
Cavity magnonics studies the coherent interaction between magnons and microwave photons, providing a platform to explore light-matter interaction in magnetic materials [1]. Driving the system into the nonlinear regime unlocks new magnonic phenomena, such as power-dependent frequency shifts [2] and bistability of magnons [3]. Among magnon nonlinearities, the magnon Kerr effect (MKE) appears...
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Izidor Benedičič (Jožef Stefan Institute)9/24/26, 12:00 PMM25 - Magnetism Research in the Central Europe Region3) Contributed talk
Doping of transition metal oxides provides a controlled route for tuning the charge, spin, and lattice degrees of freedom, thereby enabling the tailoring of magnetic and electronic functionalities of the material. However, local probe studies of powder samples remain challenging due to strong electron correlation effects and charge/spin dynamics, obscuring the fine spectroscopic properties....
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Russell Bisset (University of Innsbruck)9/24/26, 12:00 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
Localized nonlinear excitations can form long‑lived bound states whose internal degrees of freedom shape their dynamics. I will present two complementary mechanisms for binding solitary waves in two‑component Bose-Einstein condensates and their consequences for localization dynamics.
In miscible, nondipolar mixtures, polarization (“magnetic”) solitons interact via an effective potential...
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Abhay Pasupathy (Columbia University)9/24/26, 12:00 PMM06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands4) Invited talk
A number of moiré bilayer semiconductors display insulating phases at a filling of one carrier per unit cell ("half-filling"). We understand these insulating states to be driven by strong electronic correlations. It is generally understood that electron screening reduces these correlations, and so these states have been seen in isolated flat band systems. In this work, I will describe recent...
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Julia Thalmann (University of Graz)9/24/26, 12:08 PMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
We study the conditions of the solar corona with respect to the occurrence of confined and eruptive (CME-associated) large flares. We model the coronal evolution around 231 large flares observed during solar cycle 24. Based on nonlinear force-free magnetic field extrapolations, we approximate the coronal energy and helicity budgets of the flares' source regions. In particular, we study the...
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Dr Khrystyna Levchenko (Faculty of Physics, University of Vienna, Austria)9/24/26, 12:15 PMM42 - Advances in Magnonics3) Contributed talk
Magnonic crystals (MCs) with nanoscale periodic modulation enable control of spin-wave (SW) band structures for radio-frequency (RF) signal processing. While one-dimensional (1D) MCs provide frequency-selective transmission via Bragg scattering, extending periodicity to two dimensions (2D) enables more flexible band-structure engineering and controlled SW routing.
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Here, we realise nanoscale... -
Manoj Matpathi (Silicon Austria Labs, Villach, Austria)9/24/26, 12:15 PMM25 - Magnetism Research in the Central Europe Region3) Contributed talk
$\quad$ The magnetoelectric (ME) effect utilizes strain-mediated coupling between magnetostrictive and piezoelectric layers for electric-field control of magnetization and magnetic-field control of strain. Recently, ME effect has gained attention due to its wide range of applications in magnetic field sensors, spintronic and RF devices. Hence, it is vital to understand how various parameters...
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Duilio De Santis (Institute for Theoretical Physics, ETH Zurich, 8093 Zurich, Switzerland)9/24/26, 12:15 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
We propose a framework for employing two-dimensional (2D) spectroscopy to investigate the quantum sine-Gordon (QSG) model. Traditionally used to study the structure and dynamics of molecular systems, 2D spectroscopy is increasingly recognized as a powerful tool for exploring collective excitations in quantum many-body physics. By evaluating 2D maps within a Gaussian ansatz, we quantify the QSG...
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Dr Shreya Sinha (University of Potsdam)9/24/26, 12:15 PMM18 - Light-driven Processes at Interfaces3) Contributed talk
We investigate femtosecond laser induced, hot-electron mediated processes in hydrogen (atoms, molecules) and functionalized thiolates (S-CxHy) on gold surfaces (pristine, defected) via ab-initio molecular dynamics with electron friction treated under the Local Density Friction Approximation (LDFA). The time-dependent electronic temperatures in response to the laser pulse excitation are...
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Prof. Astrid Veronig (University of Graz)9/24/26, 12:20 PMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
Coronal dimmings are transient decreases of the coronal brightness observed in extreme ultraviolet (EUV) and soft X-ray (SXR) wavelengths that occur during the initial stages of a coronal mass ejection (CME). Coronal dimmings are an effect of field line opening, expansion and mass loss during a CME. However, their diagnostics potential reaches far beyond those aspects.
In this contribution,...
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Sidhartha Chatterjee (University of Luxembourg)9/24/26, 12:30 PMM42 - Advances in Magnonics3) Contributed talk
We develop a theoretical framework for magnon dynamics in a quasi-one-dimensional Heisenberg spin chain that includes a nearest-neighbour Dzyaloshinskii-Moriya interaction (DMI) and a magnetic field applied along both the hard and easy axes. Depending on the field’s direction and strength, the system hosts various ground states, including ferromagnetic and conical spiral phases, as well as a...
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Christiane Helling9/24/26, 1:30 PMM38 - Astronomy and Astrophysics across Austria4) Invited talk
The ensemble of the more than 6000 known extrasolar planets in our
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galaxy exhibits a diversity of objects unseen in our solar
system. Exoplanet research has therefore turned from discovering such
planets outside the solar system to characterizing these objects that
orbit stars other than the Sun. Recent progress in characterizing
exoplanets with the CHEOPS, TESS, and JWST space telescopes... -
Kundan Kadam (Space Research Institute, Austrian Academy of Sciences (IWF, ÖAW))9/24/26, 1:55 PMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
Protoplanetary disks are the natural outcome of low-mass star formation and the environments within which planets are born. In the classical picture, a collapsing molecular cloud core gives rise to a protostar surrounded by a centrifugally supported disk, where submicron-sized dust grains grow and eventually assemble into planetary systems. Disk evolution is regulated by angular momentum...
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Philippe Bourdin9/24/26, 2:07 PMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
It is a challenge to construct models of realistic phenomena in the solar corona, but it is a requirement to validate the model results against real observed structures, such as coronal EUV-bright loops and coronal Doppler shifts. On the one hand, if we aim to include self-consistently driven convection below the photosphere to have a realistic driving, the photospheric magnetic field is...
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Bodo Ziegler9/24/26, 2:19 PMM38 - Astronomy and Astrophysics across Austria4) Invited talk
Galaxies obey scaling relations between global physical properties like stellar mass-size, mass-star formation rate, and mass-gas metallicity. Exploiting kinematics as proxy for total mass relations between the baryonic components and the dark matter can be explored like the Tully-Fisher or Fundamental Plane relations. Such scaling relations allow to measure galaxy evolution across cosmic...
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Shelley-Anne Harrisberg (Department of Astronomy, University of Vienna)9/24/26, 2:44 PMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
Supermassive black holes (SMBH) are believed to co-evolve with their host galaxies. Evidence for this coevolution is found in the form of several correlations between the SMBH mass and various properties of the host galaxy, the tightest of which is the bulge stellar velocity dispersion (e.g., Ferrarese & Merritt 2000). To better understand these correlations, a large and robust dataset of SMBH...
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Kevin Park (Institute of Science and Technology Austria)9/24/26, 2:56 PMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
JWST has unveiled an abundant population of compact broad-line emitters at $z\gtrsim4$, the Little Red Dots (LRDs), which might represent a previously unprobed supermassive black hole (SMBH) evolution channel predominant at high redshift. However, the LRDs have remained mostly elusive at lower redshift ($z\lesssim0.5$) where detailed studies are possible from ground-based observatories.
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Benjamin Koch9/24/26, 3:08 PMM38 - Astronomy and Astrophysics across Austria3) Contributed talk
We investigate the motion of test particles in quantum-gravitational backgrounds by introducing the concept of q–desics, quantum-corrected analogs of classical geodesics. Unlike standard approaches that rely solely on the expectation value of the spacetime metric, our formulation is based on the expectation value of quantum operators, such as the affine connection operator. This allows us to...
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Toma Susi (University of Vienna)9/24/26, 4:00 PMM33 - Particle beams for material modification and analysis4) Invited talk
Graphene provides the thinnest possible diffraction grating for atom and ion transmission, providing an ideal robust model system for studying the fundamental physics of energy and momentum transfer, and the loss of coherence. Understanding atomic-scale details is only possible with the help of first-principles simulations capable of describing energy loss, which is feasible with the help of...
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Prof. Pietro Gambardella (ETH Zurich)9/24/26, 4:00 PMM42 - Advances in Magnonics4) Invited talk
Dynamical stabilization of nonequilibrium energy states is a topic of broad relevance to physics, mechanics, and biology. Dynamical stabilization can be achieved by coupling a system to a nonthermal bath, inducing a phase transition that drives the system out of its ground state and stabilizes a high-energy stationary state. These so-called dissipative phase transitions are much less studied...
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Wiebke Albrecht (AMOLF)9/24/26, 4:00 PMM18 - Light-driven Processes at Interfaces4) Invited talk
Plasmonic nanoparticles can harness light and convert it into heat, charges, and localized electromagnetic fields, offering powerful pathways for sustainable chemistry. To unlock this potential, in my group we first establish quantitative correlations between nanoparticle structure and properties at the single-particle level, using advanced spectroscopic and electron microscopy workflows. In...
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Michael Manley (Oak Ridge National Laboratory)9/24/26, 4:00 PMM13 - Localization Dynamics in Matter and Waves4) Invited talk
Relaxor ferroelectrics exhibit broad, diffuse phase transitions, and polar nanoregions (PNRs) in place of the long-range ordering observed in displacive ferroelectrics. While displacive ferroelectrics are explained by the well established soft-phonon theory, a corresponding intrinsic-localized-mode (ILM) theory for relaxors—first introduced by Bussmann-Holder et al. in 2005—has remained...
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Daniel Platz (TU Wien)9/24/26, 4:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems4) Invited talk
Microelectromechanical systems (MEMS) are a success story of modern engineering with billions of MEMS sensors in automotive, consumer and industrial use. However, despite decades of research, limitations persist. One fundamental aspect of MEMS sensor performance centers on how a MEMS resonator interacts with its environment. These interactions can be highly complex and modelling them has been...
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Antonio Picón (Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC))9/24/26, 4:00 PMM15 - Light-wave driven dynamics in quantum materials4) Invited talk
Attosecond transient absorption and reflectivity spectroscopy provide direct access to electron motion in quantum materials, enabling the study of light induced phases with unprecedented temporal resolution and offering a route to elucidate the role of electron correlations in ultrafast transient phases. In many experiments, however, the spectral response is dominated by the dynamical...
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Vidya Madhavan (Department of Physics and Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, IL, USA)9/24/26, 4:00 PM1M02 - Heavy quasiparticles in heavy fermion compounds4) Invited talk
One of the central open questions in the heavy fermion triplet superconductor UTe₂ concerns the nature of the quasiparticles within the superconducting gap which make the gap unusually shallow. A compelling possibility is that the gap appears shallow because the nontrivial topology in UTe₂ gives rise to in-gap surface states. A persuasive proof of this would be the gapping of the in-gap...
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Simone Di Cataldo (Sapienza University of Rome)9/24/26, 4:00 PMM24 - Computational Frontiers in Structure Prediction, Lattice Dynamics, and Electron-Phonon Coupling4) Invited talk
Real-space disorder through interstitial impurities, substitutional alloying, or vacancy ordering, is rarely treated on equal footing with the ideal crystal in ab initio studies of superconductivity. Yet the tools to do so exist: supercell-based electron-phonon calculations have reached a level of maturity where quantitative predictions for disordered systems are within reach, even at moderate...
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Prof. Oleksandr Dobrovolskiy (Technische Universität Braunschweig)9/24/26, 4:00 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
Studies of rectified transport in systems lacking reflection symmetry (ratchets) have been a subject of sustained interest for many decades [1]. In recent years, the superconducting diode effect has attracted considerable attention, both for enabling rectification without Joule heating in low-power electronics and as a manifestation of broken reciprocity in coherent quantum condensates [2,3]....
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Beatriz Roldan Cuenya (Fritz-Haber-Institut der Max-Planck-Gesellschaft)9/24/26, 4:00 PMM31 - Metal and metal oxide particles for catalysis and sensorics4) Invited talk
The recycling of waste products from human activities is a cornerstone of sustainable production and energy systems. In this context, the electrochemical production of basic chemical feedstocks such as hydrogen, ethanol or ammonia using green electricity plays a key role. To make such processes more active, selective and scalable, we need better catalysts than those available today. The latter...
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Dr Nahual Sobrino (International Centre For Theoretical Physics)9/24/26, 4:30 PM3) Contributed talk
We study Andreev-mediated transport and current fluctuations in interacting normal–superconducting quantum-dot systems. Using a generalized master equation based on real-time diagrammatics and full counting statistics, we compute the steady-state current, zero-frequency noise, and rate of entropy production in the large superconducting-gap limit. We show how Coulomb interactions modify...
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Peter Wahl (University of St Andrews)9/24/26, 4:30 PM1M02 - Heavy quasiparticles in heavy fermion compounds3) Contributed talk
Superconductivity emerges due to pairing of electrons in Cooper pairs, which are bosonic quasi-particles with integer spin and which condense into a macroscopically coherent ground state. So far, in all cases where the pairing symmetry of the Cooper pairs has been established, they form a spin singlet state, but they could in principle also exist as spin one quasi-particles and form a...
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Giacomo Inzani (Department of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg)9/24/26, 4:30 PMM15 - Light-wave driven dynamics in quantum materials3) Contributed talk
The ultrafast acceleration of electrons in solids by atomically strong light fields forms the basis of lightwave electronics [1,2]. When the field exceeds the adiabatic regime, non-adiabatic Landau–Zener–Majorana (LZM) tunnelling drives interband transitions at optical clock rates [3,4]. Graphene, with its Dirac-like dispersion and high damage threshold, is an ideal platform to study these...
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Menno Poot (Münster University)9/24/26, 4:30 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Understanding the dynamical behavior of micro- and nano-mechanical systems (MEMS and NEMS) is essential in a wide variety of applications ranging from nonlinear dynamics to quantum technologies. Hence, it is important to be able to precisely monitor the mechanical properties of MEMS and NEMS devices. In this contribution, we show how to track and spatially map various properties of a...
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Mr Bongsu Kim9/24/26, 4:30 PM3) Contributed talk
Physical reservoir computing offers an energy-efficient alternative to conventional neural networks, where the intrinsic memory capacity within the physical system plays a central role. In this work, we demonstrate that memory capacity can be engineered extrinsically in memoryless systems by exploiting the computational space-time tradeoff, substituting temporal memory with spatial degrees of...
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Florian Bruckner9/24/26, 4:30 PMM42 - Advances in Magnonics4) Invited talk
Spin-wave-based signal processing devices are promising candidates for compact, energy-efficient components in future 5G systems, including delay lines [1] and power limiters [2]. However, further optimization requires a detailed understanding of where energy is lost during transduction and propagation.
In this work, we present a systematic approach to identifying and quantifying individual...
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Alina Gorbunova (Institute of Applied Physics, Vienna University of Technology)9/24/26, 4:30 PMM18 - Light-driven Processes at Interfaces3) Contributed talk
Transition to renewable energy is essential for sustainable development, with solar energy offering particularly promising route. Plasmon-active materials enable use of up to 70% of the solar spectrum in the visible and infrared ranges, providing low-energy alternative to UV-driven processes. Noble metal nanostructures (e.g. Au, Ag) exhibit localized surface plasmon resonance upon irradiation...
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Xiaoquan Yu9/24/26, 4:30 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
We investigate the dynamics of topological solitons in two-dimensions (2D) and find that a ring ferrodark soliton (FDS) exhibits self-sustained oscillations in a homogeneous quasi-2D ferromagnetic spin-1 Bose-Einstein condensate (BEC), rather than expected indefinite expansion. Moreover, along with the ring radius oscillation, the nematic tensor at the magnetization-vanishing FDS core also...
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Mykhailo Vaidulych (Department of Nanocatalysis, Heyrovský Institute, Czech Academy of Sciences, Prague, Czech Republic)9/24/26, 4:30 PMM31 - Metal and metal oxide particles for catalysis and sensorics4) Invited talk
Selective hydrogen release from liquid organic hydrogen carriers (LOHCs) under mild conditions remains a major challenge. Here, we demonstrate that atomically precise Cu$_x$Pd$_y$ pentamer clusters supported on ZrO$_2$ enable efficient low-temperature dehydrogenation of cyclohexene with highly selective H$_2$ production. Among the investigated compositions, Pd$_5$ exhibits the highest benzene...
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Richard Wilhelm (TU Wien)9/24/26, 4:30 PMM33 - Particle beams for material modification and analysis4) Invited talk
Strong correlations in materials are facilitated through electron-electron or electron-phonon interactions and lead to phenomena beyond the single-active-electron picture of traditional solid-state physics. In the prototypical material 1T-TaS2, these interactions lead to a specific surface reconstruction at low temperatures closely linked to a charge density wave. At low temperatures, the...
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Eva Kogler9/24/26, 4:30 PMM24 - Computational Frontiers in Structure Prediction, Lattice Dynamics, and Electron-Phonon Coupling4) Invited talk
NbN is a workhorse superconductor in quantum devices, detectors, and high-field applications, yet a quantitative microscopic description of its structure and superconducting behavior remains incomplete. Predictions of the critical temperature ($T_\text{c}$) are systematically higher than experimental values, indicating missing ingredients in current models. Open questions remain regarding the...
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Prof. Sergej Flach (Institute for Basic Science)9/24/26, 4:45 PMM05 - Transport in low-dimensional strongly correlated quantum systems4) Invited talk
The unidirectional Hatano-Nelson chain serves as the fundamental non-Hermitian building block of the Su-Schrieffer-Heeger (SSH) model. We investigate its Anderson localization properties under diagonal binary disorder. For weak disorder, the complex eigenvalue spectrum forms a single closed loop, which bifurcates into two distinct loops at a critical disorder threshold. Correspondingly, the...
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Moritz Eder9/24/26, 4:45 PMM18 - Light-driven Processes at Interfaces3) Contributed talk
Light-driven chemistry at semiconductor surfaces couples photon absorption with thermal surface reactions in ways that are poorly understood at the molecular level. Using ultra-high vacuum (UHV) surface science techniques, we show how photocatalytic processes are composed of both thermal and photon-driven reaction steps, challenging the conventional “electrochemical” description of these...
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Siri A. Berge (University of St Andrews)9/24/26, 4:45 PM1M06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
Tuning the electronic structure of layered perovskites is a powerful pathway to control their properties for future applications. The electronic structure of Sr$_2$RuO$_4$ can be controlled by small structural distortions, with in-plane rotations of the oxygen octahedra moving the van Hove singularity across the Fermi level. This Lifshitz transition is expected to result in significant...
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Mr Mohit Kumar (Chalmers University of Technology)9/24/26, 4:45 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Two-dimensional (2D) ultracoherent nanomechanical resonators are promising platforms for room-temperature quantum sensing, precision metrology, and cavity optomechanics, but their performance is often limited by mechanical dissipation, large effective motional mass, and insufficient optomechanical coupling. In this work, we demonstrate that highly symmetric 2D nanomechanical resonators can...
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Selina Nöcker9/24/26, 4:45 PMM15 - Light-wave driven dynamics in quantum materials3) Contributed talk
Symmetry breaking underpins a wide range of nonlinear physical phenomena [1–4]. Specifically, tailored light–matter interactions with graphene, a highly symmetric two dimensional material, provide a powerful platform for probing such symmetry breaking through photocurrent spectroscopy. Using two linearly polarized harmonic fields with independent control over relative polarization angle and...
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Yann Chalopin9/24/26, 4:45 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
Abstract — 140 words
Transport in disordered media is usually described through spectra, eigenmodes, and localization lengths. Yet finite systems are probed point to point: a source excites a specific realization at a specific frequency, and transmission follows sparse, heterogeneous corridors. We show that the resolvent response defines a source-conditioned communication geometry directly...
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Dr Rohit Kishan Ray (Virginia Tech)9/24/26, 5:00 PMM13 - Localization Dynamics in Matter and Waves4) Invited talk
Localization in quantum systems is most commonly associated with disorder: Anderson's seminal result established that quenched randomness in a lattice potential suppresses diffusive transport through destructive interference, a mechanism subsequently extended to the interacting regime by many-body localization theory. Yet localization can emerge in perfectly ordered, translationally symmetric...
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Francesco Formicola (University of Naples Federico II)9/24/26, 5:00 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
Many-Body Localization (MBL) and Anderson Localization (AL) represent a fundamental paradigm of non-ergodic quantum dynamics in disordered systems. MBL and AL are hallmarks of interacting and non-interacting systems, respectively. From a quantum-information perspective, MBL phase is uniquely identified by the logarithmic entanglement growth, while in the AL case the entanglement is stationary...
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Kieran Bozier (University of Cambridge)9/24/26, 5:00 PMM24 - Computational Frontiers in Structure Prediction, Lattice Dynamics, and Electron-Phonon Coupling3) Contributed talk
The search for novel conventional superconductors is increasingly turning towards ternary and quaternary systems with large unit cells. However, because the number of local minima scales exponentially with the number of atoms, purely DFT-driven crystal structure prediction struggles to explore these complex energy landscapes and reliably determine thermodynamic stability. To address this...
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Rian Ligthart (Universität Zürich)9/24/26, 5:00 PM1M06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
Transition Metal Dichalcogenides (TMDs), a key class of 2D quantum materials, are emerging as promising alternatives to enhance efficiency at the same length scale as silicon-based electronics. Among them, WTe₂ stands out for its unique bulk properties, including its topological semimetal behaviour, the type II Weyl fermions it hosts, and its exceptionally large magnetoresistance.
We...
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Ofer Neufeld (Technion Israel Institute of Technology)9/24/26, 5:00 PMM15 - Light-wave driven dynamics in quantum materials4) Invited talk
Recently, ultrafast electron dynamics have been successfully controlled, and measured, with intense femtosecond lasers. This has enabled attosecond probing of many fundamental physical phenomena and material properties and should advance petahertz scale electronic devices with Lightwave coherent manipulation. At the same time, the field of ultrafast magnetism has rapidly evolved, enabling...
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Dr Johannes Zeininger (Institute of Materials Chemistry, TU Wien, Vienna, Austria)9/24/26, 5:00 PMM31 - Metal and metal oxide particles for catalysis and sensorics3) Contributed talk
Metal nanoparticles in reactive atmospheres are not static. Redox cycling reshapes their surface and generates transient oxide species, affecting catalytic performance. Field emission microscopy (FEM) is applied to Co and Cu nanotips to follow this interplay at nm and ms resolution which enables feature-resolved observation of oxidation and reduction during hydrogen oxidation at 10⁻⁵...
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Johannes Brötzner (TU Wien, Institute of Applied Physics)9/24/26, 5:00 PMM33 - Particle beams for material modification and analysis3) Contributed talk
Low-energy ion scattering (LEIS) is an ion beam analysis technique with utmost surface sensitivity [1]. When used with electrostatic analysers for ion detection (esaLEIS), the resulting high solid-angle coverage allows for spectra acquisition in short time scales and at low sample exposure to the incoming ion flux. However, in esaLEIS, only charged particles are detected, limiting quantitative...
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Dr Huixin Guo (TU Wien)9/24/26, 5:00 PMM42 - Advances in Magnonics3) Contributed talk
Three-dimensional (3D) magnonics is emerging as a promising direction for extending wave-based information processing beyond planar device concepts. 3D magnetic architectures open opportunities for tailoring high-frequency dynamics and guiding microwave signals in all three spatial directions on a chip. Yet, achieving coherent excitation and reliable readout in fully connected 3D nanomagnetic...
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Guselnikova Olga9/24/26, 5:00 PMM18 - Light-driven Processes at Interfaces3) Contributed talk
Plasmonic solid–molecule systems enable light-driven processes that couple electromagnetic field localization with interfacial energy transfer. However, the complexity arising from heterogeneous structures, dynamic interactions, and multiple coupled parameters limits quantitative understanding and predictive design. To quantitatively access and generalize these processes across plasmonic...
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Prof. Heiko B. Weber (Friedrich-Alexander-Universität Erlangen-Nürnberg)9/24/26, 5:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Silicon carbide (SiC) is a material that could advance the field of nanomechanics thanks to its exceptional low internal damping. Even more exciting is the prospect of hybridising mechanics with the spin degrees of freedom of colour centres such as VSI, which opens up additional possibilities for quantum sensing and quantum communication.
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However, the challenge lies in matching the frequency... -
Prof. Ferdinand Hofer (Graz University of Technology)9/24/26, 5:15 PMM31 - Metal and metal oxide particles for catalysis and sensorics3) Contributed talk
Through aggregation inside superfluid helium droplets, metal nanoparticles and core-shell clusters of different morphology are generated and deposited on solid carbon, h-BN, ITO, or SiN substrates. The created nanoparticles are characterized by temperature dependent electron microscopy, up to 1000 degrees C, energy-dispersive x-ray spectroscopy, electron energy loss spectroscopy and...
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Krzysztof Szulc (CEITEC Brno University of Technology)9/24/26, 5:15 PMM42 - Advances in Magnonics3) Contributed talk
Micro-focused Brillouin light scattering (BLS) spectroscopy is one of the most versatile methods to probe spin-wave dynamics. Typically, magnons are measured by detecting scattered light whose polarization is rotated by 90$^\circ$ relative to the incident beam. However, this conventional approach assumes the presence of only linear magneto-optical coupling. Generally, this assumption is not...
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Dr Zhishuo Huang (Electrical Engineering and Computer Science, Technische Universität Berlin, 13355 Berlin, Germany)9/24/26, 5:15 PMM24 - Computational Frontiers in Structure Prediction, Lattice Dynamics, and Electron-Phonon Coupling3) Contributed talk
The nitrogen–vacancy (NV) centre in diamond is a leading platform for nanoscale quantum sensing of magnetic fields, temperature, and strain. Sensing sensitivity is fundamentally bounded by the spin–lattice relaxation time T$_1$, making its accurate prediction essential for optimizing quantum sensor performance. Cambria et al.[1] advanced this goal with an ab initio framework reproducing NV$^–$...
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Viktor Eisler (University of Graz)9/24/26, 5:15 PMM05 - Transport in low-dimensional strongly correlated quantum systems3) Contributed talk
Time evolution and transport properties of integrable quantum many-body systems has been the topic of numerous investigations. While the hydrodynamic description starting from inhomogeneous initial states has been largely understood, much less is known about the setup where the time evolution operator itself is nonuniform. We present results for a chain of noninteracting fermions in two...
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Alexander LaFleur (University of Zurich)9/24/26, 5:15 PM1M06 - Interaction effects in correlated systems with higher-order Van Hove singularities and flat bands3) Contributed talk
The candidate type-II Weyl semimetal WTe2 has been shown to host electron-hole band crossings, unusually large magnetoresistance, and nanoscale ferroelectric domains, but there is a lack of experimental evidence establishing the connection between these different phases. While most ferroelectric materials are insulators, WTe2 is a semimetal, and because of this poses a unique opportunity to...
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Alexei Andreanov (IBS Center for Trapped Ions Quantum Science, Republic of Korea)9/24/26, 5:15 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
Sachdev-Ye-Kitaev model (SYK) is a paradigmatic quantum disordered many-body model, that is solvable. Its solvability provides multiple insights into physics of many-body interacting quantum problems. The standard model features Gaussian random interactions. Various extensions of the original model were considered in the literature, some solvalbe, others not. The solvable extensions typically...
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Alexander Redl (TU Wien)9/24/26, 5:15 PMM33 - Particle beams for material modification and analysis3) Contributed talk
Ultrashort ion pulses enable time-resolved investigations of ion-surface interactions on picosecond timescales. Laser-stimulated desorption (LSD) from metallic nanotips has emerged as a promising approach for generating such pulses, combining nanometric spatial confinement with strong electrostatic field enhancement. We present recent progress in the characterization and optimization of a...
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Thomas Mathias Tropper (Institut für Sensor- und Aktuatorsysteme, TU Wien)9/24/26, 5:15 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
UV-Vis-NIR Complex Refractive Index Characterization of Silicon Nitride Thin Films
Silicon nitride ($\mathrm{SiN_x}$) is a widely used material in nanomechanics and integrated photonics due to its favorable mechanical and optical properties. In photonics, it serves as a low-loss platform for optical waveguides owing to its low extinction coefficient $k(\lambda)$ in the infrared...
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Elena Martina Unterleutner (Institute of Electron Microscopy and Nanoanalysis, Graz University of Technology, Graz, Austria)9/24/26, 5:30 PMM33 - Particle beams for material modification and analysis3) Contributed talk
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Defect engineering is an important strategy for tuning the electronic and magnetic properties of complex oxides. Therefore, it is essential to understand atomic-scale defects, such as dopants and vacancies, in complex oxides like SrTiO$_{3}$ (STO). However, linking the microscopic properties of individual point defects to macroscopic material behavior remains challenging. Although... -
Bernhard Kretz (Institut Rudjer Boskovic)9/24/26, 5:30 PMM24 - Computational Frontiers in Structure Prediction, Lattice Dynamics, and Electron-Phonon Coupling3) Contributed talk
Nano-porous graphene (NPG) offers great potential across a range of applications, from electronics to photocatalysis. Its electronic properties, e.g., the band gap, can be tuned by changing structural parameters alone[1]. In order to optimize NPG for photo-physical and photo-chemical applications, their excited-state properties need to be studied. The method of choice for studying dynamic...
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Duilio De Santis (Institute for Theoretical Physics, ETH Zurich, 8093 Zurich, Switzerland)9/24/26, 5:30 PMM15 - Light-wave driven dynamics in quantum materials3) Contributed talk
Superconducting-like behaviors have been observed, in the past decade, in various materials under intense pump fields. In the cuprate $\rm Y Ba_2 Cu_2 O_{6+x}$ (YBCO), such remarkable effects have been reported up to the pseudogap temperature. Recently, a transient magnetic field proportional to and aligned with an external field was measured in a breakthrough experiment with pumped YBCO,...
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Theresa Farah (CNRS, IEMN, University of Lille)9/24/26, 5:30 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Reservoir computing is a bio-inspired computational paradigm that exploits the intrinsic dynamics of complex systems for temporal information processing. For any physical element to perform reservoir computing, it requires to have at least features of (1) nonlinearity and (2) fading memory. Microelectromechanical resonators, owing to their inherent nonlinearity and transient states, constitute...
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Matthew J. Timm (Institute of Chemistry, University of Graz, Austria)9/24/26, 5:30 PMM18 - Light-driven Processes at Interfaces1) Poster
The light-induced trans-cis isomerization of azobenzene and its derivatives is of great scientific and technological interest as these molecule-sized photo-switches can be used for nano-scale sensing [1] or information storage [2]. Particularly, 3,3’,5,5’-tetra-tert-butylazobenzene (mTBA) adsorbed on Au(111) has seen much interest, being studied at low coverages (< 0.1 ML) by...
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Andrea Ponticelli (Università degli Studi di Napoli Federico II)9/24/26, 5:30 PMM05 - Transport in low-dimensional strongly correlated quantum systems3) Contributed talk
We investigate the impact of quantum and thermal phase fluctuations on the suppression of superconducting order in two-dimensional systems. Within the two-dimensional quantum XY model in the phase representation, where on-site interaction terms govern quantum phase fluctuations, we perform extensive path-integral quantum Monte Carlo simulations. The resulting temperature–interaction phase...
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Prof. Brian Moller Andersen (Niels Bohr Institute, University of Copenhagen)9/24/26, 5:30 PM1M02 - Heavy quasiparticles in heavy fermion compounds4) Invited talk
The heavy-fermion compound UTe2 is a candidate for hosting intrinsic spin-triplet superconductivity. At present, however, the type of triplet Cooper pairing realized in UTe2 remains unknown, which calls for further experimental and theoretical investigations. In this talk, I present a microscopic minimal model for the superconducting phases of UTe2 based on recent findings in the description...
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Dr Rostyslav Serha (Faculty of Physics, University of Vienna, Vienna, Austria)9/24/26, 5:30 PMM42 - Advances in Magnonics3) Contributed talk
Quantum magnonics explores magnons—quasiparticles of spin waves—as carriers of quantum information, enabling coherent coupling to superconducting qubits and single-magnon detection [1,2]. Yttrium iron garnet (YIG) remains the material of choice due to its exceptionally low magnetic damping; however, magnon lifetimes at GHz frequencies are typically limited to ~1 μs for the uniform...
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Adam Vavrečka (TU Wien)9/24/26, 5:45 PMM18 - Light-driven Processes at Interfaces3) Contributed talk
Light–matter interactions constitute a promising route to tackle current energy challenges and reduce carbon footprint. For example, plasmonic materials, such as gold, copper, or aluminium, exhibit strong absorption in visible spectrum, offering an exquisite opportunity to utilize the sunlight in photocatalysis. [Linic et al., Nat. mater. 14 (2015)] It was shown that in closely packed...
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Andreas W. Hauser (Graz University of Technology)9/24/26, 5:45 PMM15 - Light-wave driven dynamics in quantum materials3) Contributed talk
Nuclear spin state manipulation is of particular interest for quantum control due to the comparably large coherence times in this degree of freedom. While spin manipulation and detection via magnetic resonance is a standard procedure for large ensembles, the selective addressing of a single nuclear spin, located at a specific position, is highly problematic from the perspective of classical...
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David García Pons (Instituto de Nanociencia y Materiales de Araqón (CSIC - Universidad de Zaragoza))9/24/26, 5:45 PMM42 - Advances in Magnonics3) Contributed talk
Cavity Quantum Electrodynamics (C-QED) is used to manipulate and interrogate qubits or to engineer hybrid light-matter states. However, cavity photons impose severe restrictions on their maximum coupling strength to paramagnetic objects, thus limiting the accessible regimes and the physics that can be explored in C-QED platforms. Beyond light, the solid state offers different quantized bosonic...
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Prof. Milena Majkić (Faculty of Technical Sciences, University of Priština-Kosovska Mitrovica, Serbia)9/24/26, 5:45 PMM33 - Particle beams for material modification and analysis3) Contributed talk
The surface modifications induced by the impact of slow highly charged ions (HCI), in the form of nano-sized features such as hillocks, holes or craters, are influenced by various parameters, most notably the ion kinetic energy (velocity) and potential energy (charge state) [1]. Understanding the mechanisms underlying these surface modifications is crucial for applications in defect...
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Lukas Legenstein (Montanuniversität Leoben, Graz University of Technology)9/24/26, 5:45 PMM24 - Computational Frontiers in Structure Prediction, Lattice Dynamics, and Electron-Phonon Coupling3) Contributed talk
Understanding how lattice thermal conductivity changes under strain or pressure is increasingly important in materials science, yet difficult to predict because a material's behavior can range from monotonic increases or decreases to anomalous trends. Molecular crystals, including organic semiconductors, stand out for exhibiting unusually large pressure-induced increases relative to their...
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Sergej Flach (Institute for Basic Science, Korea University of Science and Technology, Massey University)9/25/26, 10:30 AMM13 - Localization Dynamics in Matter and Waves4) Invited talk
Discrete breathers (DBs) are spatially localized vibrational modes ubiquitous in physical systems. Despite decades of research, their mutual interactions represent a fundamental yet unexplored facet of nonlinear dynamics. Here we uncover quantitative interaction laws for DB pairs, encoded in tunable energy beating whose amplitude provides a direct coupling metric shaped by energy mismatch,...
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Diana Pinheiro (Research Institute of Molecular Pathology (IMP))9/25/26, 10:30 AMM37 - Emergent Behavior in Soft and Living Matter4) Invited talk
Gastrulation represents a critical symmetry-breaking event in embryo development, culminating in the specification of all major cell types and the establishment of the body axes. Taking advantage of a two-dimensional (2D) in vitro system derived from human pluripotent stem cells, termed gastruloid discs, we are investigating the molecular and biophysical mechanisms driving human gastrulation....
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Sina Saravi (Heinz Nixdorf Institute, Paderborn University, Germany)9/25/26, 10:30 AMM41 - Hybrid Intelligence for the Quantum Era4) Invited talk
Neuromorphic photonic systems are emerging as an attractive platform for realization of artificial intelligence (AI) computational systems that run on light. Their potential for low-energy-consuming computations and high-capacity information processing, makes them a promising alternative or complementary solution to the conventional electronic-based systems. In this talk, I will present an...
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Dr Stefan Facsko (Ion Beam Center, Helmholtz-Zentrum Dresden-Rossendorf)9/25/26, 10:30 AMM33 - Particle beams for material modification and analysis4) Invited talk
Low- and medium-energy ion beam irradiation of surfaces induces a variety of nanoscale morphologies, depending on the irradiation conditions [1]. Under specific conditions, hexagonally ordered dot or pit arrays, checkerboard patterns, and periodic ripple structures oriented either perpendicular or parallel to the ion beam direction can form spontaneously during continuous surface erosion by...
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Anja Metelmann (KIT)9/25/26, 10:30 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems4) Invited talk
Nonlinearities are a fundamental feature of many physical systems and can serve as a powerful resource when properly controlled. In optomechanics, where light interacts with mechanical motion, they provide new opportunities for exploring regimes beyond those described by linear dynamics. In this talk, we present how engineered nonlinearities can be harnessed in cavity optomechanical systems to...
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Ales Hrabec (Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland , and PSI Center for Neutron and Muon Sciences, 5232 Villigen PSI, Switzerland)9/25/26, 10:30 AMM42 - Advances in Magnonics4) Invited talk
Novel spin-based logic architectures are being developed to provide high-performance nonvolatile data retention and processing. Two prominent directions include the development of spin-based in-memory computing and efficient, all-electric control of magnetic order. We have recently showed that spatial patterning of uniaxial anisotropy via selective oxidation can result in strong lateral...
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Denitsa Baykusheva (Institute of Science and Technology Austria)9/25/26, 10:30 AMM15 - Light-wave driven dynamics in quantum materials4) Invited talk
High-harmonic generation in correlated electronic systems has recently emerged as a sensitive probe of many-body interactions [1,2]. Still, the question on how long-range electronic coherence leaves its imprint on the emitted light and its photon statistics [3,4] remains largely unaddressed. η-pairing states [5] in the half-filled Hubbard model represent exact eigenstates exhibiting...
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Alexandra Serebrennikova (Wood K plus, Competence Centre for Wood Composites and Wood Chemistry)9/25/26, 10:30 AMM36 - Physics of cellulose based materials4) Invited talk
The interaction of volatile molecules with paper as a complex porous material is governed by coupled transport and sorption processes that are often experimentally indistinguishable when only overall uptake dynamics are considered. In this contribution, we present a strategy to resolve such overlapping processes using the model system of dimethyl sulfoxide (DMSO) vapor interacting with...
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Elena Goi (Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Straße 15, 07745 Jena, Germany)9/25/26, 11:00 AMM41 - Hybrid Intelligence for the Quantum Era4) Invited talk
Diffractive neural networks (DNNs) exploit the nature of light propagation in free space and the interaction of a light field with metasurfaces designed with machine learning (ML) methods to implement inference passively in the optical domain1. In this way, DNNs can achieve all-optical ML tasks such as image classification, image compression or decryption2. When fabricated with two photon...
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Chris Wattjes (TU Delft)9/25/26, 11:00 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Nonlinear interactions in resonant systems play a key role in many physical and engineering phenomena, but experimentally determining their coupling strengths remains challenging, particularly in multimode structures. We introduce a frequency‑domain framework that enables direct experimental quantification of nonlinear modal couplings in multi‑mode nanomechanical resonators using tailored...
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Maximilian Fuchs (Institute of Bioproducts and Paper Technology, Graz University of Technology, A-8010 Graz, Austria)9/25/26, 11:00 AMM36 - Physics of cellulose based materials3) Contributed talk
Cellulose nanocrystals (CNCs) are rod-like, highly crystalline nanoparticles. They are derived from cellulose, the most abundant biopolymer on Earth. Despite extensive work on CNCs, their refractive index (RI) is still not conclusively established. Reported values vary depending on the sample state and measurement method [1,2]. For sulfated CNCs, counterions are likely responsible for some of...
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Miguel Sequeira (Helmholtz-Zentrum Dresden-Rossendorf (HZDR))9/25/26, 11:00 AMM33 - Particle beams for material modification and analysis4) Invited talk
Instability-driven pattern formation appears across many nonequilibrium systems, from nanoscale surfaces to larger-scale natural patterns. In the ion-beam community, decades of experiments have revealed a rich variety of surface morphologies, from ripples and dots to faceted structures, and continuum theories can reproduce many of these patterns qualitatively. Yet turning a continuum equation...
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Prof. Juan Archilla (Universidad de Sevilla)9/25/26, 11:00 AMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
A lattice of electrical circuits with some specific coupling and three oscillators per unit cell, called the diamond lattice, has the property that the three phonon bands are optical and completely flat.
The addition of a nonlinear on-site hard potential brings about the existence of breathers, that is localized periodic oscillations. The largest vibration can be located in any of the...
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Jakob Schindelwig (Tu Wien IAP)9/25/26, 11:00 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Many membraneless compartments of cells, such as stress-granules, form via liquid-liquid phase separation. In cells many compartments of the same type and similar sizes can coexist. Since this is inconsistent with equilibrium phase separation physics, we ask if active mechanics could explain this observation. We develop a model coupling dynamics of the droplet material to an active...
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Andreas Ney (Johannes Kepler University)9/25/26, 11:00 AMM42 - Advances in Magnonics4) Invited talk
A thorough understanding of magnetic damping in ferromagnetic materials is of importance in spintronics from both a fundamental and a practical point of view. The phenomenological Gilbert parameter α in the Landau-Lifshitz equation is central to quantify the magnetic damping, which can be measured with ferromagnetic resonance (FMR). Permalloy (Py = Ni$_{80}$Fe$_{20}$) is one of the model...
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Dominik Spath (Graz University of Technology)9/25/26, 11:00 AMM15 - Light-wave driven dynamics in quantum materials3) Contributed talk
Ultrafast light fields provide a powerful technique for driving quantum materials far from equilibrium, yet achieving a predictive, microscopic description of their dynamics remains a major challenge. In this talk, I will present a new first-principles framework for optically driven superconductors that directly connects microscopic electron–phonon interactions to time-resolved experimental...
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Mr Hiroki Ono (The University of Osaka)9/25/26, 11:15 AMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
We propose the one dimensional (1D) nonlinear lattice exhibiting ballistic energy transport.
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The 1D nonlinear lattice is constructed to vanish the umklapp processes which disturb smooth thermal transport.
The methodology for construction is based on the symmetry in Fourier space.
The nonlinear potential has non-locality, and the strength coefficient of long-range interaction is determined... -
Antti Paajanen (VTT Technical Research Centre of Finland Ltd)9/25/26, 11:15 AMM36 - Physics of cellulose based materials4) Invited talk
Progress in understanding the molecular architecture of wood secondary cell walls has enabled the use of computational methods, and molecular simulation in particular, to investigate their nanostructure and water interactions. We report simulation studies that address the structure of wood cell walls, and cellulosic materials derived from them, at different length scales and levels of...
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cedrik barutel (TU WIEN)9/25/26, 11:15 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
The forces that mixtures of motorized and passive crosslinking proteins collectively generate between cytoskeletal filaments within our cells are the key drivers of active cellular mechanics. Despite their importance, a unified theory to describe such crosslinking forces has so far been missing.
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I'll show the basis of a theory that predicts the forces generated collectively by crosslinking... -
Gian-Luca Schmid9/25/26, 11:15 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Non-reciprocal interactions violate the action-reaction symmetry of Newton’s third law, giving rise to phenomena such as amplification, synchronization, and spontaneous parity-time symmetry breaking. In quantum systems, non-reciprocal interactions have recently attracted significant interest as a new tool to engineer functionality, with potential for sensing and signal processing applications....
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Nele Tornow (Institute of Solid State Physics, Friedrich Schiller University Jena, Jena, Germany)9/25/26, 11:15 AMM15 - Light-wave driven dynamics in quantum materials3) Contributed talk
With its direct relation to many exotic transport phenomena, quantum geometry is a fundamental concept in solid state physics. However, measurements of the local quantum geometry, e.g., Berry curvature, has been possible to date only via angle-resolved photoemission spectroscopy [1]. On the other hand, in one of our recent theoretical works [2] we have shown that there is a link between linear...
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Marija Krstic (Institute of Science and Technology Austria)9/25/26, 11:30 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Many cytoskeletal filaments that drive cellular shape changes and motility, such as actin, FtsZ, and TubZ, undergo treadmilling—a dynamic process in which monomers continuously add to one filament end while dissociating from the other. However, the physical principles that enable treadmilling remain unclear.
Treadmilling requires monomer structure to encode faster binding at one filament...
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Georgios Kopidakis9/25/26, 11:30 AMM13 - Localization Dynamics in Matter and Waves4) Invited talk
Two-dimensional (2D) materials of atomic thickness exhibit rich physics and strong potential for advanced technologies. Following the discovery of graphene, extensive research has explored fundamental properties of 2D materials and inspired analogous developments in photonics, cold atoms, and engineered metamaterials. Progress in electronics, optoelectronics, quantum technologies, catalysis,...
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Liga Jasulaneca (Delft University of Technology)9/25/26, 11:30 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Two-dimensional nanomechanical resonators have been studied mainly in crystalline materials, leaving the atomically thin amorphous limit largely unexplored. Here we study this regime in suspended nanodrum resonators made from monolayer amorphous carbon (MAC), an intrinsically disordered two-dimensional membrane. Using optothermal actuation and interferometric readout, we resolve...
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Jan Klima (CEITEC Brno University of Technology, Czechia)9/25/26, 11:30 AMM42 - Advances in Magnonics3) Contributed talk
With quantum computing on the rise, there is an increased need to deal with cryogenic environments, often involving superconducting materials. Hybrid systems utilizing spin waves at cryogenic temperatures could benefit from increased conversion efficiency of electrical and magnonic signals and feature tunable devices, changing their functionality upon crossing the critical temperature of the...
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Gregor Hlawacek (Helmholtz-Zentrum Dresden-Rossendorf)9/25/26, 11:30 AMM33 - Particle beams for material modification and analysis3) Contributed talk
Gallium oxide (Ga$_2$O$_3$) is a highly versatile material with applications in power electronics, optoelectronics, and battery technologies. Among its polymorphs, monoclinic $\beta$-Ga$_2$O$_3$ is the most chemically and thermally stable phase. However, controlling the metastable polymorph phases remains challenging, and fabrication technologies for nanoscale structures are still under...
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Melanie Müller (Fritz Haber Institute of the Max Planck Society, Berlin, Germany, University of Bonn, Bonn, Germany)9/25/26, 11:30 AMM15 - Light-wave driven dynamics in quantum materials4) Invited talk
1T-TaS$_2$ is a layered quantum material hosting an insulating commensurate charge density wave (CDW) phase at low temperatures. The insulating nature of this phase arises from a complex interplay between electron-phonon coupling, electron-electron correlations and interlayer orbital hybridization, making it highly susceptible to external perturbations and atomic-scale disorder. In particular,...
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T. Harter (Institute of Bioproducts and Paper Technology, Graz University of Technology, Inffeldgasse 23, 8010 Graz, Austria, CD Laboratory for Fiber Swelling and Paper Performance, Inffeldgasse 23, 8010 Graz, Austria)9/25/26, 11:45 AMM36 - Physics of cellulose based materials3) Contributed talk
Porous cellulose networks form the structural backbone of absorbent hygiene materials, where internal pore architecture directly governs fluid retention capacity. Despite this, engineering-focused investigation of tampon pore structure remains scarce. This study applies micro-computed tomography (micro-CT) combined with the sub-network of an over-segmented watershed (SNOW) algorithm and...
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Ms Enise Kartal (Delft University of Technology)9/25/26, 11:45 AMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
High-frequency stability is a defining metric for the performance of nanomechanical resonators in advanced sensing and timekeeping applications. While 2D materials like graphene offer extreme miniaturization, high mechanical compliance, and high responsivity, these properties make them highly susceptible to nonlinearities that degrade frequency stability. Here, we demonstrate that graphene...
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Dr Verena Brehm (TU Eindhoven)9/25/26, 11:45 AMM42 - Advances in Magnonics3) Contributed talk
Upconversion is an intriguing process where driving of a low-frequency mode allows the occupation of a higher-frequency mode. We specifically focus on magnonic upconversion in the antiferromagnetic material YFeO3. By strongly pumping the low-frequency (qFM) mode with a laser pulse, the high-frequency (qAFM) mode is populated, as recently demonstrated experimentally [1]. Using a macrospin...
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Sophie Wrathall (TU Wien)9/25/26, 11:45 AMM33 - Particle beams for material modification and analysis3) Contributed talk
Metallic nanoparticles can be powerful catalysts for reactions such as the water gas shift reaction, which converts steam and CO to H$_2$ and CO$_2$ [1]. Depending on their composition, size, shape, and surface area, different nanoparticles exhibit different catalytic properties [2].
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We investigated the shaping of spherical AuCu particles with 10 nm diameter using 2 keV Ar+ beams. This was... -
Dr Alexandra (Olenka) Jain (Princeton University/Flatiron Institute, Simons Foundation)9/25/26, 11:45 AMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Cytoplasmic streaming plays a particularly important role in large cells, where the timescales of diffusion are too slow for the mixing and transport of cellular material. The motion of molecular motors on cytoskeletal elements has been known to drive streaming in a variety of biological systems. Previous theoretical studies established that in the Drosophila oocyte, cytoplasmic streaming...
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Masayuki Kimura (Setsunan University)9/25/26, 12:00 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
Intrinsic localized modes (ILMs) or discrete breathers (DBs) have been observed experimentally in a coupled cantilever array with nonlinear on-site potentials [1,2]. The on-site potential is introduced via the magnetic interaction between a permanent magnet, which is attached to the free end of the cantilever, and an electromagnet. Since the strength of the interaction can be modulated by the...
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Dr Shengqiang Zhou (Helmholtz-Zentrum Dresden-Rossendorf)9/25/26, 12:00 PMM33 - Particle beams for material modification and analysis3) Contributed talk
Complex oxides host a multitude of novel phenomena in condensed matter physics, such as various forms of multiferroicity, colossal magnetoresistance, quantum magnetism, and superconductivity. This is largely due to the strong correlation between charge, spin, orbital, and lattice parameters. Specifically, tilting the delicate energy balance in lattice interactions and kinetics, achieved by...
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Niklas Notter (Institute of Theoretical and Computational Physics, Graz University of Technology)9/25/26, 12:00 PMM15 - Light-wave driven dynamics in quantum materials3) Contributed talk
Monolayer 1T-TaS2 hosts a star-of-David charge-density wave (CDW) that stabilizes a low-temperature Mott-insulating state. Recent time-resolved spectroscopies indicate a coupling between the CDW amplitude mode and the electronic correlation strength, yet the role of the screened Coulomb interaction remains unclear. Using the constrained random-phase approximation, we show that the CDW...
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Kristýna Davídková (Faculty of Physics, University of Vienna, Austria)9/25/26, 12:00 PMM42 - Advances in Magnonics3) Contributed talk
The drive toward faster, more efficient 5G communication systems requires radio-frequency (RF) devices to adapt from Frequency Range 1 (FR1, sub 6 GHz) to higher operating frequencies in Frequency Range 2 (FR2, 24.25–71.0 GHz) and the proposed Frequency Range 3 (FR3, 7.125–24.25 GHz). Spin wave (SW) devices are promising candidates, combining efficient operation in the higher frequency range...
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Juraj Májek (Institute of Science and Technology Austria (ISTA))9/25/26, 12:00 PMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Cytoskeletal filaments are vital for various cellular processes, such as cell motility, division and shape maintenance, all of which depend on the active motion of filaments. Across evolution, two mechanisms have emerged: propulsion, in which molecular motors generate an active force; and treadmilling. In treadmilling, filaments directionally polymerize by growing on one end and shrinking on...
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A. Laatikainen (Institute of Bioproducts and Paper Technology, Graz University of Technology, Inffeldgasse 23, 8010 Graz, Austria)9/25/26, 12:00 PMM36 - Physics of cellulose based materials3) Contributed talk
Mechanosorptive creep (MSC), the accelerated time-dependent deformation of paper under simultaneous mechanical load and cyclic humidity, is a leading cause of compressive failure in corrugated containerboard during transport and storage. Despite decades of research, MSC prediction remains challenging because the relative roles of fiber-level hygroexpansion and network-level bonding are still...
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Mr Marco Dicosta (Neel, CNRS)9/25/26, 12:00 PMM29 - Nanomechanical, Electromechanical, Optomechanical and Levitated Systems3) Contributed talk
Measurement back-action imposes a fundamental limit on the precision of interferometric measurements of mechanical motion, setting the standard quantum limit (SQL) for continuous opto-mechanical detection. Back-action evading (BAE) measurement schemes provide a route to surpass this limit by selectively measuring a single quadrature of motion, rejecting all back-action noise onto the other...
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Dr Constance Toulouse (CRISMAT, University of Caen, CNRS, ENSICAEN, France)9/25/26, 12:15 PMM33 - Particle beams for material modification and analysis3) Contributed talk
Strain-engineering as a means to tune and control functional properties is extensively pursued in materials science today. In particular, epitaxial strain has been shown to allow the control of multiferroic properties (magnetic and ferroeletric transitions) as well as conduction states (metal-insulator or superconducting transitions) in thin films of various materials. We propose here a new...
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Juan Archilla (Universidad de Sevilla)9/25/26, 12:15 PMM13 - Localization Dynamics in Matter and Waves3) Contributed talk
Floquet discrete breathers are localized periodic solutions that may appear in nonlinear lattices with periodic modulation in space and time.
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Based in a previous experimental device constructed with cantilevers and with additive time-periodic excitation, we have designed a system with parametric driving that can be modulated in space and time.
For that system, we deduce theoretically the... -
Andrey Voronov (University of Vienna)9/25/26, 12:15 PMM42 - Advances in Magnonics3) Contributed talk
The inverse design approach in magnonics exploits the wave nature of spin waves and machine learning techniques to develop logical devices with functionalities that exceed the capabilities of analytical methods. While promising for analog, Boolean, and neuromorphic computing, current implementations of inverse micromagnetics face significant memory limitations that hinder the design of complex...
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RUMA MAITY (Technischen Universität Wien)9/25/26, 12:15 PMM37 - Emergent Behavior in Soft and Living Matter3) Contributed talk
Natural microswimmers move in low Reynolds number environments by performing non-reciprocal body deformations that generate propulsion in viscous fluids. Inspired by these mechanisms, artificial microswimmers are being designed to perform tasks such as targeted transport and drug delivery.
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In this work, we train a two-dimensional triangular swimmer to move in a desired direction using...
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