Magnetic flux response of non-Hermitian topological phases
File(s)
Published version
Author(s)
Denner, Marco Michael
Schindler, Frank
Type
Journal Article
Abstract
We derive the response of non-Hermitian topological phases with intrinsic point gap topology to localized magnetic flux insertions. In two spatial dimensions, we identify the necessary and sufficient conditions for a flux skin effect that localizes an extensive number of in-gap modes at a flux core. In three dimensions, we furthermore establish the existence of: a flux spectral jump, where flux tube insertion fills up the entire point gap only at a single parallel crystal momentum; a higher-order flux skin effect, which occurs at the ends of flux tubes in presence of pseudo-inversion symmetry; and a flux Majorana mode that represents a spectrally isolated mid-gap state in the complex energy plane. We uniquely associate each non-Hermitian symmetry class with intrinsic point gap topology with one of these cases or a trivial flux response, and discuss possible experimental realizations.
Date Issued
2023-05
Date Acceptance
2023-02-15
Citation
SciPost Physics, 2023, 14 (5), pp.1-49
ISSN
2542-4653
Publisher
SciPost
Start Page
1
End Page
49
Journal / Book Title
SciPost Physics
Volume
14
Issue
5
Copyright Statement
Copyright M. M. Denner and F. Schindler.
This work is licensed under the Creative Commons
Attribution 4.0 International License.
Published by the SciPost Foundation.
This work is licensed under the Creative Commons
Attribution 4.0 International License.
Published by the SciPost Foundation.
License URL
Identifier
https://scipost.org/10.21468/SciPostPhys.14.5.107
Publication Status
Published
Article Number
107
Date Publish Online
2023-05-11