Topological Insulators on the Ruby Lattice with Rashba Spin-Orbit Coupling

被引：1

作者：

侯净敏

王国祥

机构：

[1] DepartmentofPhysics,SoutheastUniversity

来源：

Communications in Theoretical Physics | 2013年 / 60卷 / 07期

关键词：

topological insulators; ruby lattice; rashba spin-coupling;

D O I：

暂无

中图分类号：

TM21 [绝缘材料、电介质及其制品];

学科分类号：

0805 ; 080502 ; 080801 ;

摘要：

We investigate a tight-binding model of the ruby lattice with Rashba spin-orbit coupling. We calculate the band structure of the lattice and evaluate the Z2 topological indices. According to the Z2 topological indices and the band structure, we present the phase diagrams of the lattice with different filling fractions. We find that topological insulators occur in some range of parameters at 1/6, 1/3, 1/2, 2/3 and 5/6 filling fractions. We analyze and discuss the characteristics of these topological insulators and their edge states.

引用

页码：129 / 135

页数：7