Topology beyond the Berry curvature |
TYPE | Condensed Matter Seminar |
Speaker: | Binghai Yan |
Affiliation: | Weizmann |
Organizer: | Amit Keren |
Date: | 11.05.2021 |
Time: | 14:30 - 15:30 |
Location: | Lidow Nathan Rosen (300) |
Abstract: | The band structure topology is commonly characterized by the Berry curvature, which leads to exotic surface states and anomalous Hall effect. In this talk, I will introduce our recent works on topology-induced nonlinear phenomena, including the nonlinear anomalous Hall effect[1,2], the photocurrent[3,4,5], and unidirectional magnetoresistance [6,7] etc. Here, the band topology is discussed in a broader context beyond the Berry curvature.
[1] Phys. Rev. B, 97 (4), 041101(R) (2018). [2] 2D Materials, 5 (4), 044001 (2018). [3] Phys Rev Res 2, 033100 (2020). [4] Phys Rev Lett 125, 227401 (2020). [5] Nature Commun. 10, 3783 (2019). [6] Nature Materials 20, pages638–644(2021) [7]The Innovation. 2(1), 100085 (2021) |