Reference : Universal Hall conductance scaling in non-Hermitian Chern insulators
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Universal Hall conductance scaling in non-Hermitian Chern insulators
Groenendijk, Solofo []
Schmidt, Thomas mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
Meng, Tobias []
Physical Review Research
American Physical Society (APS)
College Park
[en] We investigate the Hall conductance of a two-dimensional Chern insulator coupled to an environment causing gain and loss. Introducing a biorthogonal linear response theory, we show that sufficiently strong gain and loss lead to a characteristic nonanalytical contribution to the Hall conductance. Near its onset, this contribution exhibits a universal power law with a power 3/2 as a function of Dirac mass, chemical potential, and gain strength. Our results pave the way for the study of non-Hermitian topology in fermionic transport experiments.
Fonds National de la Recherche - FnR

File(s) associated to this reference

Fulltext file(s):

Open access
Groenendijk et al. - 2021 - Universal Hall conductance scaling in non-Hermitia.pdfPublisher postprint391.05 kBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.