• Corpus ID: 238856981

Edge states in a non-Hermitian topological crystalline insulator

  title={Edge states in a non-Hermitian topological crystalline insulator},
  author={Qiunan Xu and Feng Liu and Chui-zhen Chen and Dong-Hui Xu},
  • Qiunan Xu, Feng Liu, +1 author Dong-Hui Xu
  • Published 14 October 2021
  • Physics
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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