DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jeon, Junmo | ko |
dc.contributor.author | Lee, SungBin | ko |
dc.date.accessioned | 2023-12-27T01:00:22Z | - |
dc.date.available | 2023-12-27T01:00:22Z | - |
dc.date.created | 2023-11-21 | - |
dc.date.created | 2023-11-21 | - |
dc.date.created | 2023-11-21 | - |
dc.date.created | 2023-11-21 | - |
dc.date.issued | 2023-10 | - |
dc.identifier.citation | SCIPOST PHYSICS CORE, v.6, no.4 | - |
dc.identifier.issn | 2666-9366 | - |
dc.identifier.uri | http://hdl.handle.net/10203/316864 | - |
dc.description.abstract | Quasiperiodic systems are neither randomly disordered nor translationally invariant in the absence of periodic length scales. Based on their incommensurate order, novel phys-ical properties such as critical states and self-similar wavefunctions have been actively discussed. However, in open systems generally described by the non-Hermitian Hamilto-nians, it is hardly known how such quasiperiodic order would lead to new phenomena. In this work, we show that the intertwined quasiperiodicity and non-Hermiticity can give rise to striking effects: perfect delocalization of the critical and localized states to the extended states. In particular, we explore the wave function localization character in the Aubry-Andre-Fibonacci (AAF) model where non-reciprocal hopping phases are present. Here, the AAF model continuously interpolates the two different limits between metal to insulator transition and the critical states, and the non-Hermiticity is encoded in the hopping phase factors. Surprisingly, their interplay results in the perfect delocalization of the states, which is never allowed in quasiperiodic systems with Hermiticity. By quan-tifying the localization via the inverse participation ratio and the fractal dimension, we discuss that the non-Hermitian hopping phase leads to delicate control of localization characteristics of the wave function. Our work offers (1) emergent delocalization tran-sition in quasiperiodic systems via non-Hermitian hopping phase and (2) detailed local-ization control of the critical states. In addition, we suggest an experimental realization of controllable localized, critical and delocalized states, using photonic crystals. | - |
dc.language | English | - |
dc.publisher | SCIPOST FOUNDATION | - |
dc.title | Localization control born of intertwined quasiperiodicity and non-Hermiticity | - |
dc.type | Article | - |
dc.identifier.wosid | 001122936600001 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.issue | 4 | - |
dc.citation.publicationname | SCIPOST PHYSICS CORE | - |
dc.identifier.doi | 10.21468/SciPostPhysCore.6.4.077 | - |
dc.contributor.localauthor | Lee, SungBin | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | CRYSTALS | - |
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