Topological phases of non-Hermitian SSH model with spin-orbit coupling

被引：12

作者：

Liu, Y. ^{[1
]}

Han, Y. Z. ^{[1
]}

Liu, C. S. ^{[1
]}

机构：

[1] Yanshan Univ, Sch Sci, Hebei Key Lab Microstruct Mat Phys, Qinhuangdao 066004, Hebei, Peoples R China

来源：

OPTIK | 2022年 / 255卷

基金：

中国国家自然科学基金;

关键词：

Non-Hermitian SSH model; Spin-orbit coupling; Non-Hermitian skin effect; Bulk-boundary correspondence; Topological invariant;

D O I：

10.1016/j.ijleo.2022.168727

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Inspired by the traditional bulk-boundary correspondence that can be broken by the non Hermitian skin effect, we study the topological properties of the non-Hermitian Su-SchriefferHeeger (SSH) model with spin-orbit coupling (SOC). Considering the relationship of the non Hermitian skin effect and the non-Hermitian Aharonov-Bohm (AB) effect, the topological counterpart is constructed. It finds that the system can be studied in the two subspaces. The analytical forms of the topological invariants are obtained to distinguish different topological phases. The numerical solutions verify the above analysis. The method is expected to apply the system with the non-Hermitian skin effect.

引用

页数：8

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