Search Results for author: Ji-Kun Zhou

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Real space topological invariant and higher-order topological Anderson insulator in two-dimensional non-Hermitian systems

no code implementations24 Feb 2021 Hongfang Liu, Ji-Kun Zhou, Bing-Lan Wu, Zhi-Qiang Zhang, Hua Jiang

We study the characterization and realization of higher-order topological Anderson insulator (HOTAI) in non-Hermitian systems, where the non-Hermitian mechanism ensures extra symmetries as well as gain and loss disorder. We illuminate that the quadrupole moment $Q_{xy}$ can be used as the real space topological invariant of non-Hermitian higher-order topological insulator (HOTI).

Disordered Systems and Neural Networks Mesoscale and Nanoscale Physics

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