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Prof. Binghai Yan: Transition Metal Dichalcogenides with Multifaceted Topological Phases and Topological Transport Phenomena (2018/08/08)

( 2018-07-23 )

题目

Transition Metal Dichalcogenides with Multifaceted Topological Phases and Topological Transport Phenomena

报告人

  

Prof. Binghai Yan (颜丙海)

Weizmann Institute of Science, Israel

时间

2018年8月8日(星期三)上午10:00

地点

微尺度国家研究中心9004会议室

报告人简介

Binghai Yan received his PhD in physics at IASTU, Tsinghua University in 2008. After that, he worked as a Humboldt scholar in Germany and a postdoc in Stanford University. In 2012, he became a group leader in the Max Planck Institute in Dresden, Germany. Since 2017, he joins the Weizmann Institute of Science, Israel, as an assistant professor. He is a young scientist recognized for his theoretical study on topological materials, especially concrete predictions concerning materials that carry specific topological characteristics, many of which were verified by experiments. Recently, he was award the ARCHES Prize by the Minerva Foundation of Germany, and the Israel Physics Society Prize for Young Scientists.

报告摘要

The past decade has witnessed intensive research aimed at investigating the role of band-structure topology and discovering topological materials. In this talk, I will introduce our most recent progress on novel topological phases discovered in a well-known family of compounds, transition metal dichalcogenides (WTe2 and MoTe2). These phases include the Weyl semimetal, the monopole-nodal-ring semimetal and the higher-order topological insulator. Further, we find that the band-structure topology gives rise to an exotic nonlinear quantum Hall effect that exists with the time-reversal symmetry, distinct from the ordinary Hall effect. 


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