Anomalous helical edge states in a non-Hermitian Chern insulator
Mesoscale and Nanoscale Physics
2018-10-31 v2 Optics
Quantum Physics
Abstract
A non-Hermitian extension of a Chern insulator and its bulk-boundary correspondence are investigated. It is shown that in addition to the robust chiral edge states that reflect the nontrivial topology of the bulk (nonzero Chern number), anomalous helical edge states localized only at one edge can appear, which are unique to the non-Hermitian Chern insulator.
Keywords
Cite
@article{arxiv.1805.09632,
title = {Anomalous helical edge states in a non-Hermitian Chern insulator},
author = {Kohei Kawabata and Ken Shiozaki and Masahito Ueda},
journal= {arXiv preprint arXiv:1805.09632},
year = {2018}
}
Comments
13 pages, 11 figures