Gauge-dependent topology in non-reciprocal hopping systems with pseudo-Hermitian symmetry

Non-Hermitian physics, an active topic in photonics, is also being increasingly extended to investigate the band topologies of condensed-matter systems. Here, the authors report a 2D non-Hermitian model exhibiting exceptional rings and topological boundary modes in the spectral degeneracy, they prop...

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Autores principales: Xintong Zhang, Ke Xu, Chunmin Liu, Xiaoxiao Song, Bowen Hou, Rui Yu, Hao Zhang, Dan Li, Jing Li
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/5daf4219019a4e8b8bb562b39aece58f
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Sumario:Non-Hermitian physics, an active topic in photonics, is also being increasingly extended to investigate the band topologies of condensed-matter systems. Here, the authors report a 2D non-Hermitian model exhibiting exceptional rings and topological boundary modes in the spectral degeneracy, they propose how to realise these features using topolectrical circuits.