Wagga2026/AC2MP2026

Session

Spectroscopies 1

SPE-1

10 Feb 2026, 14:00

Convention Centre

Conveners

Spectroscopies 1: Spectroscopies 1

• Amelia Liu (Monash University)

84. Ultrafast light-matter interaction: from transition metal oxides to van der Waals materials

Jingdi Zhang (Department of Physics, Hong Kong University of Science and Technology)

10/02/2026, 14:00

Spectroscopies

Invited Oral

In quantum materials, exotic quantum states can emerge as a result of strong many-body interaction that are of charge, magnetic, orbital and structural origins. The delicate balance among these interacting degrees of freedom engenders not only a ground state, but also many other competing metastable states with distinct macroscopic properties. Despite static tuning methods, the rapidly...

68. Raman signature of cation vacancies in rare-earth nitrides

Martin Markwitz (Victoria University of Wellington)

10/02/2026, 14:30

Spectroscopies

Contributed Oral

The rare-earth mononitrides (LnN, Ln a lanthanide) form a mutually epitaxy-compatible series of ferromagnetic semiconductors with promise for mixed superconductor-spintronics.[1] Their varying occupation of 4f states precipitate enormously varied and useful magnetic properties, the topic of intense recent investigation toward those applications.[2,3] Their electrical properties can be...

77. Phase-sensitive Surface Second-harmonic Generation of Topological Dirac Semimetal

Syed Mohammed Faizanuddin (Institute of Physics, Academia Sinica, Taipei, Taiwan)

10/02/2026, 14:45

Spectroscopies

Contributed Oral

Topological semimetals are a new class of quantum materials characterized by symmetry-protected, nontrivial band crossings near the Fermi energy. These systems have attracted wide interest for their ability to host exotic quantum-transport and electromagnetic phenomena. Although bulk topological semimetals have demonstrated enhanced optical nonlinearities with promise for next-generation...

26. Nonlinear Absorption in Perovskite Materials

Dr David Ompong

10/02/2026, 15:00

Spectroscopies

Contributed Oral

Optical absorption is of paramount importance for any material that is used in photovoltaic, lasing, light emitting diodes, etc., applications. Perovskite materials have several potential nonlinear optical applications. A thorough understanding of two-photon absorption (TPA) in perovskite semiconductors is required for nonlinear optical applications [1-4]. We have derived a TPA coefficient K2...

60. Li-ion Dynamics in Solid Electrolytes: An Integrated Neutron-based techniques and Terahertz Time-Domain Spectroscopy Study

Mr Harrison Su (UNSW)

10/02/2026, 15:15

Spectroscopies

Contributed Oral

All-solid-state batteries (ASSBs) hold significant commercial promise, driven by their inherent potential to deliver exceptional energy density, power density, and safety. While factors such as rate capability, interfacial stability, and extended cycle life hinder the development of ASSBs, which are critically dependent upon ionic conductivity enhancements within solid-state electrolytes...

63. Ultrafast Magnetisation Dynamics Driven by Terahertz Light Fields via Spin Hall and Rashba–Edelstein Effects

Sergey Kovalev (TU Dortmund)

10/02/2026, 15:30

Spectroscopies

Invited Oral

Ultrafast control of magnetisation states in magnetically ordered systems represents a key technological challenge for developing memory devices operating on picosecond timescales. This challenge has stimulated extensive research into ultrafast magnetisation dynamics, spin transport, and magnetoresistance phenomena across a wide range of conventional and emerging magnetic materials. To achieve...