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Magnetic Flux Response of Non-Hermitian Topological Phases
- Source :
- SciPost Phys. 14, 107 (2023)
- Publication Year :
- 2022
-
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.<br />Comment: 10 pg main text + 19 pg appendix, 6 + 5 figures
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- SciPost Phys. 14, 107 (2023)
- Publication Type :
- Report
- Accession number :
- edsarx.2208.11712
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.21468/SciPostPhys.14.5.107