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Article: Novel Z2 Topological Metals and Semimetals
Title | Novel Z2 Topological Metals and Semimetals |
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Authors | |
Issue Date | 2016 |
Publisher | American Physical Society. The Journal's web site is located at http://prl.aps.org |
Citation | Physical Review Letters, 2016, v. 116 n. 1, article no. 016401 , p. 1-5 How to Cite? |
Abstract | © 2016 American Physical Society.We report two theoretical discoveries for Z2 topological metals and semimetals. It is shown first that any dimensional Z2 Fermi surface is topologically equivalent to a Fermi point. Then the famous conventional no-go theorem, which was merely proven before for Z Fermi points in a periodic system without any discrete symmetry, is generalized so that the total topological charge is zero for all cases. Most remarkably, we find and prove an unconventional strong no-go theorem: all Z2 Fermi points have the same topological charge νZ2=1 or 0 for periodic systems. Moreover, we also establish all six topological types of Z2 models for realistic physical dimensions. |
Persistent Identifier | http://hdl.handle.net/10722/223866 |
ISSN | 2021 Impact Factor: 9.185 2020 SCImago Journal Rankings: 3.688 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhao, YX | - |
dc.contributor.author | Wang, ZD | - |
dc.date.accessioned | 2016-03-18T02:30:10Z | - |
dc.date.available | 2016-03-18T02:30:10Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Physical Review Letters, 2016, v. 116 n. 1, article no. 016401 , p. 1-5 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/223866 | - |
dc.description.abstract | © 2016 American Physical Society.We report two theoretical discoveries for Z2 topological metals and semimetals. It is shown first that any dimensional Z2 Fermi surface is topologically equivalent to a Fermi point. Then the famous conventional no-go theorem, which was merely proven before for Z Fermi points in a periodic system without any discrete symmetry, is generalized so that the total topological charge is zero for all cases. Most remarkably, we find and prove an unconventional strong no-go theorem: all Z2 Fermi points have the same topological charge νZ2=1 or 0 for periodic systems. Moreover, we also establish all six topological types of Z2 models for realistic physical dimensions. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://prl.aps.org | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.rights | Copyright 2016 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevLett.116.016401 | - |
dc.title | Novel Z2 Topological Metals and Semimetals | - |
dc.type | Article | - |
dc.identifier.email | Zhao, YX: yuxinphy@hku.hk | - |
dc.identifier.email | Wang, ZD: zwang@hku.hk | - |
dc.identifier.authority | Wang, ZD=rp00802 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevLett.116.016401 | - |
dc.identifier.scopus | eid_2-s2.0-84954456902 | - |
dc.identifier.hkuros | 257183 | - |
dc.identifier.volume | 116 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | article no. 016401, p. 1 | - |
dc.identifier.epage | article no. 016401, p. 5 | - |
dc.identifier.isi | WOS:000367678200008 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0031-9007 | - |