Accueil > Français > Événements > Séminaires > Séminaires généraux du Laboratoire de Physique des Solides

Topology of electronic states in crystals - Titus Neupert

University of Zurich

Conférence en visio, le lien sera communiqué ultérieurement

A deep understanding of the electronic structure of crystalline materials is crucial for our ability to develop the hardware basis for modern electronic devices. Yet, a large part of this theory was not understood until recently, when the mathematical concepts of topology were connected to electronic band structures. Topological materials show robust states on their boundary, such as the surface or edge, that are innately connected to the structure of their interior. This lecture will discuss the broad phenomenology of topological materials, from topological insulators, to Weyl semimetals and phases for which crystalline symmetry is important. I will introduce the concepts of bulk-boundary correspondence, topological invariants, and present the measurable consequences of topology. Finally, the extension of these concepts to non-Hermitian, i.e., dissipative, systems will be presented.

Titus Neupert, associate professor at the department of Physics at the University of Zürich, Switzerland. After his PhD at ETH, Zürich, in the group of Prof. Sigrist, on the electron fractionalization in two dimensional quantum systems, he has been postdoctoral fellow at the Princeton Center for Theoretical Science. His research covers the physics of exotic materials, such as higher-order topological insulators, topological order, superconductivity and Majorana fermions and topological metals.


Ajouter un événement iCal