Z2 topological insulator of ultracold atoms in bichromatic optical lattices

被引：0

作者：

Ardabili, Ahad K. ^{[1
]}

Dereli, Tekin ^{[1
]}

Mustecaplioglu, Ozgur E. ^{[1
]}

机构：

[1] Koc Univ, Dept Phys, TR-34450 Istanbul, Turkey

来源：

PHYSICA B-CONDENSED MATTER | 2015年 / 459卷

关键词：

Optical lattice; Topological insulator; Bichromatic;

D O I：

10.1016/j.physb.2014.11.018

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate the effect of a strong bichromatic deformation to the Z(2), topological insulator in a fermionic ultracold atomic system proposed by Beri and Cooper [Phys. Rev. Lett. 107 (2011) 145301]. Large insulating gap of this system allows for examination of strong perturbations. We conclude that the Z(2) topological character of the system is robust against a large global perturbation which breaks the inversion symmetry but preserves the time-reversal symmetry. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1 / 5

页数：5

共 30 条

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