Date and Time
Tue, Nov. 23, 2021
2:15 p.m. - 3:15 p.m.
(GMT-0600) US/Central
Group(s): Adjunct Professors
LOCATION: Online – Zoom Link:
https://riceuniversity.zoom.us/j/96448262764?pwd=SHc5R3NvSmtScXo4NkQ1NEM4SEY2dz09
TITLE: Topological materials and topological transport phenomena
SPEAKER: Binghai Yan (Department of condensed matter physics, Weizmann Institute of Science, Israel)
ABSTRACT: Topological materials have been extensively studied in last decades. The Berry curvature usually characterizes the band structure topology and is known to induce intrinsic anomalous Hall effect (AHE). The topological Weyl semimetal shows a monopole-like Berry curvature field in band structure and thus exhibits giant AHE if the material is magnetic. Further, the topology can induce more exotic nonlinear electrical and optical phenomena. For example, Berry monopoles lead to a nonlinear version of AHE even in the presence of time-reversal symmetry and also a giant dc current in irritation of light.