Topological Hamiltonian as an exact tool for topological invariants

被引：80

作者：

Wang, Zhong ^{[1
]}

Yan, Binghai ^{[2
]}

机构：

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

[2] Johannes Gutenberg Univ Mainz, Inst Inorgan & Analyt Chem, D-55099 Mainz, Germany

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2013年 / 25卷 / 15期

关键词：

BAND-GAPS; INSULATORS; MODEL; SEMICONDUCTORS; FIELD;

D O I：

10.1088/0953-8984/25/15/155601

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We propose the concept of 'topological Hamiltonian' for topological insulators and superconductors in interacting systems. The eigenvalues of the topological Hamiltonian are significantly different from the physical energy spectra, but we show that the topological Hamiltonian contains the information of gapless surface states, therefore it is an exact tool for topological invariants.

引用

页数：8

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