Topological invariants for interacting topological insulators with inversion symmetry

被引：67

作者：

Wang, Zhong ^{[1
]}

Qi, Xiao-Liang ^{[2
]}

Zhang, Shou-Cheng ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China

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

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.85.165126

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For interacting Z(2) topological insulators with inversion symmetry, we propose a simple topological invariant expressed in terms of the parity eigenvalues of the interacting Green's function at time-reversal invariant momenta and zero frequency. We derive this result from our previous formula involving the integral over the frequency-momenta space. This formula greatly simplifies the explicit calculation of Z(2) topological invariants in inversion-symmetric insulators with strong interactions.

引用

页数：4

共 31 条

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