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• W3208159504 abstract "The non-Hermitian skin effect can arise in materials which have asymmetrical hoppings between atoms or resonating units that makes the bulk eigen-spectrum sensitive to boundary conditions. When skin effect emerges, even eigenstates in the bulk continuum can become localized on the edges, making the distinction between edge and bulk states challenging. We establish the bulk-boundary correspondence for the a Chern insulator model with non-Hermitian skin effect by combining two approaches (non-Bloch approach and approach). Both approaches aim at suppressing the skin effect but they are based on different mathematical tools. A biorthogonal inverse participation ratio is used as a measure to distinguish between bulk states and edge states, and a non-Bloch Chern number is used to characterize the topology and predict the number of topological edge bands. The resulting phase diagram has interesting features that are not found in Hermitian systems. For example, one topological transition and two non-Hermitian phase transitions can be induced by merely tuning a single parameter." @default.
• W3208159504 created "2021-11-08" @default.
• W3208159504 creator A5013904094 @default.
• W3208159504 creator A5037191689 @default.
• W3208159504 date "2021-11-04" @default.
• W3208159504 modified "2023-09-27" @default.
• W3208159504 title "Topology in non-Hermitian Chern insulator systems with skin effect." @default.
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• W3208159504 hasPublicationYear "2021" @default.
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