Anderson localization and topological transition in Chern insulators

被引：34

作者：

Castro, Eduardo V. ^{[1
,2
]}

Lopez-Sancho, M. Pilar ^{[3
]}

Vozmediano, Maria A. H. ^{[3
]}

机构：

[1] Univ Lisbon, Inst Super Tecn, CeFEMA, P-1049001 Lisbon, Portugal

[2] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China

[3] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 08期

关键词：

SCALING THEORY; LATTICES; REALIZATION; DIFFUSION; ABSENCE; MODEL;

D O I：

10.1103/PhysRevB.92.085410

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We analyze the topological transition and localization evolution of disordered two-dimensional systems with nontrivial topology based on bipartite lattices. Chern insulators with broken time-reversal symmetry show nonstandard behavior for disorder realizations selectively distributed on only one of the sublattices. The Chern number survives to a much stronger disorder strength (one order of magnitude higher) than in the equally distributed disordered case, and the final state in the strongly disordered case is metallic.

引用

页数：6

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