Supermetal-insulator transition in a non-Hermitian network model

  title={Supermetal-insulator transition in a non-Hermitian network model},
  author={Hui Liu and Jhih-Shih You and Shinsei Ryu and Ion Cosma Fulga},
  journal={Physical Review B},
We study a non-Hermitian and non-unitary version of the two-dimensional Chalker-Coddington network model with balanced gain and loss. This model belongs to the class D† with particlehole symmetry† and hosts both the non-Hermitian skin effect as well as exceptional points. By calculating its two-terminal transmission, we find a novel contact effect induced by the skin effect, which results in a non-quantized transmission for chiral edge states. In addition, the model exhibits an insulator to… 


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