# System size dependent topological zero modes in coupled topolectrical chains

@article{RafiUlIslam2022SystemSD, 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}, year={2022} }

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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