Disordered effects in topological states

日期:2017-12-11 阅读:534


Disorder inevitably exists in realistic samples, manifesting itself in various exotic properties for the topological states. In this talk, we briefly introduce several of our works over the last few years, regarding three topics about disorder effects in topological states. For weak disorder, the robustness of topological states is demonstrated, especially for both quantum spin Hall states with Z2=1 and size induced nontrivial topological insulators with Z2=0. For moderate disorder, by increasing the randomness of both the impurity distribution and the impurity induced potential strength, the topological insulator states can be created from normal metallic or insulating states. For strong disorder, the disorder causes a metal-insulator transition. Due to their topological nature, the phase diagrams are much richer in topological state systems. Finally, the trends in these areas of disorder research are discussed.


江华,苏州大学物理学院教授。2005年本科毕业于南京大学物理学院。2010年博士毕业于中科院物理研究所。2010-2012年在北京大学量子材料中心从事博士后研究。2013年,加入苏州大学物理学院。主要从事凝聚态材料中的拓扑态和低维材料中的新量子态理论研究,特别是它们输运性质的研究。迄今已在SCI学术期刊发表学术论文50余篇,包括Phys. Rev. Lett. 8篇,Nature Commun 1篇,Phys. Rev. B 32篇,引用1900余次。担任Nature Phys, Nature Commun, Phys. Rev. Lett.等学术期刊审稿人, 美国物理联合会中国学术顾问,Scientific report 编委等。 

Host: Zhiwen Shi


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