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Article: Unified Theory of PT and CP Invariant Topological Metals and Nodal Superconductors
Title | Unified Theory of PT and CP Invariant Topological Metals and Nodal Superconductors |
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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. 15, article no. 156402 , p. 1-6 How to Cite? |
Abstract | © 2016 American Physical Society.As PT and CP symmetries are fundamental in physics, we establish a unified topological theory of PT and CP invariant metals and nodal superconductors, based on the mathematically rigorous KO theory. Representative models are constructed for all nontrivial topological cases in dimensions d=1, 2, and 3, with their exotic physical meanings being elucidated in detail. Intriguingly, it is found that the topological charges of Fermi surfaces in the bulk determine an exotic direction-dependent distribution of topological subgap modes on the boundaries. Furthermore, by constructing an exact bulk-boundary correspondence, we show that the topological Fermi points of the PT and CP invariant classes can appear as gapless modes on the boundary of topological insulators with a certain type of anisotropic crystalline symmetry. |
Persistent Identifier | http://hdl.handle.net/10722/225655 |
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 | Schnyder, AP | - |
dc.contributor.author | Wang, Z | - |
dc.date.accessioned | 2016-05-20T08:09:47Z | - |
dc.date.available | 2016-05-20T08:09:47Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Physical Review Letters, 2016, v. 116 n. 15, article no. 156402 , p. 1-6 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/225655 | - |
dc.description.abstract | © 2016 American Physical Society.As PT and CP symmetries are fundamental in physics, we establish a unified topological theory of PT and CP invariant metals and nodal superconductors, based on the mathematically rigorous KO theory. Representative models are constructed for all nontrivial topological cases in dimensions d=1, 2, and 3, with their exotic physical meanings being elucidated in detail. Intriguingly, it is found that the topological charges of Fermi surfaces in the bulk determine an exotic direction-dependent distribution of topological subgap modes on the boundaries. Furthermore, by constructing an exact bulk-boundary correspondence, we show that the topological Fermi points of the PT and CP invariant classes can appear as gapless modes on the boundary of topological insulators with a certain type of anisotropic crystalline symmetry. | - |
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.116.156402 | - |
dc.title | Unified Theory of PT and CP Invariant Topological Metals and Nodal Superconductors | - |
dc.type | Article | - |
dc.identifier.email | Zhao, YX: yuxinphy@hku.hk | - |
dc.identifier.email | Wang, Z: zwang@hku.hk | - |
dc.identifier.authority | Wang, Z=rp00802 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevLett.116.156402 | - |
dc.identifier.scopus | eid_2-s2.0-84963819709 | - |
dc.identifier.hkuros | 257931 | - |
dc.identifier.volume | 116 | - |
dc.identifier.issue | 15 | - |
dc.identifier.spage | article no. 156402, p. 1 | - |
dc.identifier.epage | article no. 156402, p. 6 | - |
dc.identifier.isi | WOS:000373984100006 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0031-9007 | - |