System size dependent topological zero modes in coupled topolectrical chains

  title={System size dependent topological zero modes in coupled topolectrical chains},
  author={S. M. Rafi-Ul-Islam and Zhuo Bin Siu and Haydar Sahin and Ching Hua Lee and Mansoor B. A. Jalil},
  journal={Physical Review B},
In this paper, we demonstrate the emergence and disappearance of topological zero modes (TZMs) in a coupled topolectrical (TE) circuit lattice. Specifically, we consider non-Hermitian TE chains in which TZMs do not occur in the individual uncoupled chains, but emerge when these chains are coupled by inter-chain capacitors. The coupled system hosts TZMs which show size-dependent behaviours and vanish beyond a certain critical size. In addition, the emergence or disappearance of the TZMs in the… 

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