Topological insulators and superconductors

被引：12058

作者：

Qi, Xiao-Liang ^{[1
,2
]}

Zhang, Shou-Cheng ^{[2
]}

机构：

[1] Univ Calif Santa Barbara, Microsoft Res, Stn Q, Santa Barbara, CA 93106 USA

[2] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

来源：

REVIEWS OF MODERN PHYSICS | 2011年 / 83卷 / 04期

基金：

美国国家科学基金会;

关键词：

NON-ABELIAN STATISTICS; SPIN-ORBIT INTERACTION; SINGLE DIRAC CONE; CONDENSED-MATTER; GAUGE NONINVARIANCE; FRACTIONAL CHARGE; CHIRAL FERMIONS; SURFACE-STATES; ZERO MODES; BI2SE3;

D O I：

10.1103/RevModPhys.83.1057

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Topological insulators are new states of quantum matter which cannot be adiabatically connected to conventional insulators and semiconductors. They are characterized by a full insulating gap in the bulk and gapless edge or surface states which are protected by time-reversal symmetry. These topological materials have been theoretically predicted and experimentally observed in a variety of systems, including HgTe quantum wells, BiSb alloys, and Bi2Te3 and Bi2Se3 crystals. Theoretical models, materials properties, and experimental results on two-dimensional and three-dimensional topological insulators are reviewed, and both the topological band theory and the topological field theory are discussed. Topological superconductors have a full pairing gap in the bulk and gapless surface states consisting of Majorana fermions. The theory of topological superconductors is reviewed, in close analogy to the theory of topological insulators.

引用

页数：54

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