Ilya Vekhter (Louisiana State University, USA) will give a talk entitled "Known unknowns: boundaries, interfaces, and disorder in topological electronic matter" at the Wigner Colloquium on Tuesday, 3 November, at 2 p.m.
Place: KFKI Campus, Bldg. 1, Conference room, and also on Zoom
Abstract:
Modern technology relies on the physics of interfaces between different materials, and design of such interfaces provides control over functionalities. Part of the early promise of topological electronic matter was the quasi-universal appearance of states at surfaces and interfaces. Yet the question of what properties of these states are influenced by the details of the interface and which remain robust has not been fully addressed. After a brief introduction to topological materials I will describe several distinct pathways to model the interfaces of topological insulators, Dirac and Weyl semimetals, and superconductors. I will contrast the properties and experimental signatures that are "topologically protected" from those that are significantly influenced by the details of the boundaries and disorder. I will also discuss how this sensitivity affects possible applications of topological materials.
Bővebben az előadóról
Ilya Vekhter earned his PhD from Brown University in Rhode Island, USA. He is currently a professor in the Department of Physics at Louisiana State University in Baton Rouge. His main research interests lie in the competition and interplay of various ordering phenomena in electronic systems and their potential applications in quantum technologies. In his work, he draws on analytical, numerical, and ab initio methods to develop a comprehensive understanding of the systems under investigation and gain deeper insight into the underlying physical processes. In recent years, his research has focused primarily on unconventional superconductivity, the physics of topological insulators and their heterostructures, and the study of exotic magnetic materials. He has been involved in organizing numerous international conferences and schools and regularly delivers invited lectures at leading universities around the world. Professor Vekhter is a Fellow of the American Physical Society.
