Topological Insulators on the Ruby Lattice with Rashba Spin-Orbit Coupling
Topological Insulators on the Ruby Lattice with Rashba Spin-Orbit Coupling
复制标题
具有 Rashba 自旋轨道耦合的红宝石晶格上的拓扑绝缘体
DOI:
10.1088/0253-6102/60/1/19
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发表时间:
2013-07
影响因子:
3.1
通讯作者:
Wang Guo-Xiang
中科院分区:
文献类型:
--
作者:
Hou Jing-Min;Wang Guo-Xiang
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.
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