Second-Order Topological Phases in Non-Hermitian Systems
A d-dimensional second-order topological insulator (SOTI) can host topologically protected (d-2)-dimensional gapless boundary modes. Here, we show that a 2D non-Hermitian SOTI can host zero-energy modes at its corners. In contrast to the Hermitian case, these zero-energy modes can be localized only...
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Published in | Physical review letters Vol. 122; no. 7; p. 076801 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
22.02.2019
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Online Access | Get more information |
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