Elastic scattering of surface states on three-dimensional topological insulators

王靖; 朱邦芬

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Elastic scattering of surface states on three-dimensional topological insulators

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摘要

Topological insulators as a new type of quantum matter materials are characterized by a full insulating gap in the bulk and gapless edge/surface states protected by the time-reversal symmetry.We propose that the interference patterns caused by the elastic scattering of defects or impurities are dominated by the surface states at the extremal points on the constant energy contour.Within such a formalism,we summarize our recent theoretical investigations on the elastic scattering of topological surface states by various imperfections,including non-magnetic impurities,magnetic impurities,step edges,and various other defects,in comparison with the recent related experiments in typical topological materials such as BiSb alloys,Bi2Te3,and Bi2Se3 crystals.

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来源
《中国物理：英文版》 |2013年第6期|49-57|共9页
作者
王靖; 朱邦芬;
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作者单位

State Key Laboratory of Low-Dimensional Quantum Physics;

and Department of Physics;

Tsinghua University;

Department of Physics;

McCullough Building;

Stanford University;

Institute of Advanced Study;

Tsinghua University;

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原文格式 PDF
正文语种 chi
中图分类量子论;
关键词
topological insulator; surface state; scattering by imperfection; scanning tunneling microscope;

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Elastic scattering of surface states on three-dimensional topological insulators

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