# Edge states in a non-Hermitian topological crystalline insulator

@inproceedings{Xu2021EdgeSI, title={Edge states in a non-Hermitian topological crystalline insulator}, author={Qiunan Xu and Feng Liu and Chui-zhen Chen and Dong-Hui Xu}, year={2021} }

Breaking Hermiticity in topological systems gives rise to intriguing phenomena, such as the exceptional topology and the non-Hermitian skin effect. In this work, we study a non-Hermitian topological crystalline insulator sitting on the Kekulé-modulated honeycomb lattice with balanced gain and loss. We find that the gaplessness of the topological edge states in the non-Hermitian system is insensitive to edge geometries under moderate strength of gain and loss, unlike the cases of Hermitian…

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