Topological states in a dimerized system with staggered magnetic fluxes

Article

关键词: HALDANE MODEL;    REALIZATION;    INSULATOR;   

DOI  :  10.1103/PhysRevB.105.235139

来源: SCIE

【 摘 要 】

Robust edge states propagate along the edges and corner states gather at the corners in two-dimensional (2D) first-order and second-order topological insulators, respectively. Here, we report two kinds of topological states in an extended 2D dimerized lattice with staggered flux threading. At 1/2 filling, we observe isolated corner states as well as metallic near-edge states in the C = 2 Chern insulator states. At 1/4 filling, we find a C = 0 topological state, where the robust edge states are well localized along the edges but bypass corners. These topological insulator states differ from both conventional Chern insulators and the usual high-order topological insulators.

【 授权许可】

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