Defective Majorana zero modes in a non-Hermitian Kitaev chain

@article{Zhao2021DefectiveMZ,
  title={Defective Majorana zero modes in a non-Hermitian Kitaev chain},
  author={Xiao-Ming Zhao and Cuixian Guo and Su-Peng Kou and Lin Zhuang and Wu-Ming Liu},
  journal={Physical Review B},
  year={2021}
}
We investigate the number-anomalous of the Majorana zero modes in the non-Hermitian Kitaev chain, whose hopping and superconductor paring strength are both imbalanced. We find that the combination of two imbalanced non-Hermitian terms can induce defective Majorana edge states, which means one of the two localized edge states will disappear due to the non-Hermitian suppression effect. As a result, the conventional bulk-boundary correspondence is broken down. Besides, the defective edge states… 
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