MAP-Fis Research Conference

Session

Condensed Matter Physics and Nanomaterials III (Chairs: José Pedro Basto, UM and João Ventura, UP)

2 Oct 2026, 16:25

Anfiteatro de Física, Ed. 6 - 1.02 (School of Sciences, University of Minho)

196. Charge transport and optical surface state signatures of disordered topological insulator systems

Mafalda Moreira (IFIMUP - Institute of Physics for Advanced Materials, Nanotechnology and Photonics, Faculty of Sciences, University of Porto)

02/10/2026, 16:25

Contributed Talk (20 minutes)

The integration of 3D topological insulator (TI) materials, such as $\text{Bi}_2 \text{Te}_3$, $\text{Bi}_2 \text{Se}_3$, and $\text{Sb}_2 \text{Te}_3$, into emerging technological platforms has attracted significant research interest across various fields, particularly in spintronics [1]. While their fundamental properties have been extensively studied in crystalline systems, particularly...

184. Phase Transitions and Uniaxial Negative thermal Expansion in CsNdNb2O7: Combined Local Probe and Diffraction Study

Pedro Alexandre Silva De Sousa (Universidade do Porto (PT))

02/10/2026, 16:45

Contributed Talk (20 minutes)

Zhu et al. [1] report that the CsNdNb₂O₇ system undergoes two phase transitions: a polar-to-antipolar structural change at 625 K followed by a transition to the aristotype at 800 K, resulting in three distinct phases— P2$_{1}$am (#26), C2/m (#12), and P4/mmm (#123). Their study attributes these transitions to rotations and tilts of NbO₆ octahedra, which not only stabilize the polar...

197. Electrospun Nanofibers for Advanced Solar Cells

sameh ifa

02/10/2026, 17:05

Contributed Talk (20 minutes)

This thesis project focuses on the development of functionalized, photoactive hybrid nanofibers for potential application in next-generation photovoltaic technologies. The research investigates the incorporation of photoactive organic materials, particularly MDMO-PPV:PCBM, and natural pigments such as chlorophyll and curcumin into biopolymer matrices to produce composite nanofibers by...

214. Signatures of Incommensurability in moiré Quasi- crystals

Raul Liquito (Faculdade de Ciências Universidade do Porto)

02/10/2026, 17:25

Contributed Talk (20 minutes)

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...

205. Lead-free multiferroic heterostructures for enhanced magnetic field sensing

Tiago Rodrigues (University of Minho)

02/10/2026, 17:45

Nanostructured strain-coupled multiferroic composite thin films, combining magnetostrictive and piezoelectric phases, have attracted wide interest due to their strong magnetoelectric (ME) effect. Their stress-mediated coupling arises from the interfacial mechanical interaction between the two phases, which links their elastic, electric and magnetic fields and enables the mutual detection and...