1. Novel transport phenomena in topological semimetals at high magnetic fields

Grigory Bednik

UC Santa Cruz, USA

10 June 2021 Thu 11 am

                                      IBS Center for Theoretical Physics of Complex Systems (PCS), Administrative Office (B349), Theory Wing, 3rd floor

                                      Expo-ro 55, Yuseong-gu, Daejeon, South Korea, 34126 Tel: +82-42-878-8633                     

Topological semimetals (particularly Weyl and nodal line semimetals) are characterized by novel transport properties, which become even more unusual in the presence of magnetic field. In this talk I would like to discuss two examples of such novel transport properties. The first of them is a second order response to applied electric field: Weyl semimetals may generate direct photocurrent from applied light irradiation, and in addition they are characterized by very large second harmonic generation. The second one is thermopower which at the quantum limit grows linearly with magnetic field without saturation.