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Article: Topological Classification and Stability of Fermi Surfaces

TitleTopological Classification and Stability of Fermi Surfaces
Authors
Issue Date2013
PublisherAPS. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2013, v. 110 n. 24 How to Cite?
AbstractIn the framework of the Cartan classification of Hamiltonians, a kind of topological classification of Fermi surfaces is established in terms of topological charges. The topological charge of a Fermi surface depends on its codimension and the class to which its Hamiltonian belongs. It is revealed that six types of topological charges exist, and they form two groups with respect to the chiral symmetry, with each group consisting of one original charge and two descendants. It is these nontrivial topological charges which lead to the robust topological protection of the corresponding Fermi surfaces against perturbations that preserve discrete symmetries. © 2013 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/189323
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhao, Yen_US
dc.contributor.authorWang, Zen_US
dc.date.accessioned2013-09-17T14:35:44Z-
dc.date.available2013-09-17T14:35:44Z-
dc.date.issued2013en_US
dc.identifier.citationPhysical Review Letters, 2013, v. 110 n. 24en_US
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/189323-
dc.description.abstractIn the framework of the Cartan classification of Hamiltonians, a kind of topological classification of Fermi surfaces is established in terms of topological charges. The topological charge of a Fermi surface depends on its codimension and the class to which its Hamiltonian belongs. It is revealed that six types of topological charges exist, and they form two groups with respect to the chiral symmetry, with each group consisting of one original charge and two descendants. It is these nontrivial topological charges which lead to the robust topological protection of the corresponding Fermi surfaces against perturbations that preserve discrete symmetries. © 2013 American Physical Society.-
dc.languageengen_US
dc.publisherAPS. The Journal's web site is located at http://prl.aps.orgen_US
dc.relation.ispartofPhysical Review Lettersen_US
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleTopological Classification and Stability of Fermi Surfacesen_US
dc.typeArticleen_US
dc.identifier.emailWang, Z: zwang@hkucc.hku.hken_US
dc.identifier.authorityWang, Z=rp00802en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.110.240404-
dc.identifier.pmid25165899-
dc.identifier.scopuseid_2-s2.0-84879098260-
dc.identifier.hkuros222557en_US
dc.identifier.hkuros244841-
dc.identifier.volume110en_US
dc.identifier.spage240404en_US
dc.identifier.epage240404en_US
dc.identifier.isiWOS:000320394700002-

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