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Article: Photonic topological fermi nodal disk in non-Hermitian magnetic plasma

TitlePhotonic topological fermi nodal disk in non-Hermitian magnetic plasma
Authors
Issue Date2020
Citation
Light: Science and Applications, 2020, v. 9, n. 1, article no. 40 How to Cite?
AbstractTopological physics mainly arises as a necessary link between properties of the bulk and the appearance of surface states, and has led to successful discoveries of novel topological surface states in Chern insulators, topological insulators, and topological Fermi arcs in Weyl, Dirac, and Nodal line semimetals owing to their nontrivial bulk topology. In particular, topological phases in non-Hermitian systems have attracted growing interests in recent years. In this work, we predict the emergence of the topologically stable nodal disks where the real part of the eigen frequency is degenerate between two bands in non-ideal magnetohydrodynamics plasma with collision and viscosity dissipations. Each nodal disk possesses continuously distributed topological surface charge density that integrates to unity. It is found that the lossy Fermi arcs at the interface connect to the middle of the projection of the nodal disks. We further show that the emergence, coalescence, and annihilation of the nodal disks can be controlled by plasma parameters and dissipation terms. Our findings contribute to understanding of the linear theory of bulk and surface wave dispersions of non-ideal warm magnetic plasmas from the perspective of topological physics.
Persistent Identifierhttp://hdl.handle.net/10722/294976
ISSN
2023 Impact Factor: 20.6
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, Wenhui-
dc.contributor.authorGao, Wenlong-
dc.contributor.authorCao, Leifeng-
dc.contributor.authorXiang, Yuanjiang-
dc.contributor.authorZhang, Shuang-
dc.date.accessioned2021-01-05T04:58:48Z-
dc.date.available2021-01-05T04:58:48Z-
dc.date.issued2020-
dc.identifier.citationLight: Science and Applications, 2020, v. 9, n. 1, article no. 40-
dc.identifier.issn2095-5545-
dc.identifier.urihttp://hdl.handle.net/10722/294976-
dc.description.abstractTopological physics mainly arises as a necessary link between properties of the bulk and the appearance of surface states, and has led to successful discoveries of novel topological surface states in Chern insulators, topological insulators, and topological Fermi arcs in Weyl, Dirac, and Nodal line semimetals owing to their nontrivial bulk topology. In particular, topological phases in non-Hermitian systems have attracted growing interests in recent years. In this work, we predict the emergence of the topologically stable nodal disks where the real part of the eigen frequency is degenerate between two bands in non-ideal magnetohydrodynamics plasma with collision and viscosity dissipations. Each nodal disk possesses continuously distributed topological surface charge density that integrates to unity. It is found that the lossy Fermi arcs at the interface connect to the middle of the projection of the nodal disks. We further show that the emergence, coalescence, and annihilation of the nodal disks can be controlled by plasma parameters and dissipation terms. Our findings contribute to understanding of the linear theory of bulk and surface wave dispersions of non-ideal warm magnetic plasmas from the perspective of topological physics.-
dc.languageeng-
dc.relation.ispartofLight: Science and Applications-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titlePhotonic topological fermi nodal disk in non-Hermitian magnetic plasma-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41377-020-0274-3-
dc.identifier.pmid32194954-
dc.identifier.pmcidPMC7066160-
dc.identifier.scopuseid_2-s2.0-85081745671-
dc.identifier.volume9-
dc.identifier.issue1-
dc.identifier.spagearticle no. 40-
dc.identifier.epagearticle no. 40-
dc.identifier.eissn2047-7538-
dc.identifier.isiWOS:000519354100001-
dc.identifier.issnl2047-7538-

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