（Würzburg University）

地点：M830

摘要：

Higher-order topological insulators (HOTIs) are new topological states of matter featuring different bulk-edge correspondence from their conventional counterparts. In this talk, I will first discuss how will disorder induce higher-order topological nontrivial phases, i.e., higher-order topological Anderson insulators. I will then present how to utilize the transport properties of topological hinge modes in 3D HOTIs to construct a unique higher-order Fabry-Pérot interferometer with particular interference features. 

Refs: 1, C. A. Li et al., Phys. Rev. Lett. 125 166801(2020);
2, C. A. Li et al., Phys. Rev. Lett. 127 026803(2021).

报告人简介：Dr. Chang-An Li is a postdoc researcher at institute for theoretical physics and astrophysics, Würzburg University, Germany. He obtained his B.S. from Beijing Normal University in 2014 and his Ph.D in physics from The University of Hong Kong in 2019. After working as a postdoc at Westlake University in 2020, he moved to Würzburg University as a postdoc researcher. He mainly works on novel quantum phases of matter and their quantum transport properties.

邀请人：胡海平（82649070）