Non-Hermiticity-induced reentrant localization in a quasiperiodic lattice

Abstract In this paper, we demonstrate that the non-Hermiticity can induce reentrant localization in a generalized quasiperiodic lattice. Specifically, by considering a nonreciprocal dimerized lattice with staggered quasiperiodic disorder, we find that the localization transition can appear twice by...

Full description

Saved in:
Bibliographic Details
Published inNew journal of physics Vol. 23; no. 12; pp. 123048 - 123057
Main Authors Wu, Chaohua, Fan, Jingtao, Chen, Gang, Jia, Suotang
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.12.2021
Subjects
Boundary conditions
disorder
Localization
non-Hermiticity
Phase transitions
Physics
skin effect
Transition points
Wave packets
Online AccessGet full text

Cover

More Information
Summary:Abstract In this paper, we demonstrate that the non-Hermiticity can induce reentrant localization in a generalized quasiperiodic lattice. Specifically, by considering a nonreciprocal dimerized lattice with staggered quasiperiodic disorder, we find that the localization transition can appear twice by increasing the disorder strength. We also unravel a multi-complex-real eigenenergy transition, whose transition points coincide with those in the localization phase transitions. Moreover, the impacts of boundary conditions on the localization properties have been clarified. Finally, we study the wavepacket dynamics in different parameter regimes, which offers an experimentally feasible route to detect the reentrant localization.
Bibliography:NJP-114006.R2
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ac430b