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首页> 外文期刊>Bulletin of the American Physical Society >APS -APS March Meeting 2017 - Event - Interaction effects on Mirror symmetry protected topological phases
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APS -APS March Meeting 2017 - Event - Interaction effects on Mirror symmetry protected topological phases

机译:APS -APS 2017年3月会议-事件-镜像对称受保护的拓扑阶段的交互作用

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Employing large-scale fermionic quantum Monte Carlo simulations, we investigate the interaction effects on the mirror symmetry protected topological phases. We design a 2D tight-binding model based on honeycomb lattice, where each lattice site has two orbitals with opposite parity. Spin-orbital coupling and inter-orbital hopping terms give rise to nonzero integer mirror Chern number of the noninteracting system. Upon adding electronic interactions, we explore the possibility that the Z-group classification be reduced to a smaller group, i.e., two topologically inequivalent phases in the noninteracting limit can adiabatically evolve into each other in the presence of interaction without symmetry breaking.
机译:利用大规模的铁离子量子蒙特卡洛模拟,我们研究了镜面对称保护拓扑相的相互作用。我们设计了一个基于蜂窝晶格的二维紧密结合模型,其中每个晶格位点都有两个具有相反奇偶性的轨道。自旋轨道耦合和轨道间跳变项引起非相互作用系统的非零整数镜像Chern数。在添加电子相互作用后,我们探索了将Z-基团分类降低为更小​​的基团的可能性,即,在不存在对称性破坏的情况下,存在相互作用的情况下,非相互作用极限中的两个拓扑上不等价的相可以绝热地彼此进化。

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