Long-range Coulomb interaction effects on the topological phase transitions between semimetals and insulators

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dc.contributor.authorHan, Sang Eunko
dc.contributor.authorMoon, Eun-Gookko
dc.date.accessioned2018-06-19T08:28:27Z-
dc.date.available2018-06-19T08:28:27Z-
dc.date.created2018-06-18-
dc.date.created2018-06-18-
dc.date.created2018-06-18-
dc.date.created2018-06-18-
dc.date.created2018-06-18-
dc.date.issued2018-06-
dc.identifier.citationPHYSICAL REVIEW B, v.97, no.24, pp.241101-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10203/242606-
dc.description.abstractTopological states may be protected by a lattice symmetry in a class of topological semimetals. In three spatial dimensions, the Berry flux around gapless excitations in momentum space concretely defines a chirality, so a protecting symmetry may be referred to as a chiral symmetry. Prime examples include a Dirac semimetal (DSM) in a distorted spinel, BiZnSiO4, protected by a mirror symmetry, and a DSM in Na3Bi, protected by a rotational symmetry. In these states, topology and chiral symmetry are intrinsically tied. In this Rapid Communication, the characteristic interplay between a chiral symmetry order parameter and an instantaneous long-range Coulomb interaction is investigated with the standard renormalization group method. We show that a topological transition associated with chiral symmetry is stable under the presence of a Coulomb interaction and the electron velocity always becomes faster than the one of a chiral symmetry order parameter. Thus, the transition must not be relativistic, which implies that supersymmetry is intrinsically forbidden by the long-range Coulomb interaction. Asymptotically exact universal ratios of physical quantities such as the energy gap ratio are obtained, and connections with experiments and recent theoretical proposals are also discussed.-
dc.languageEnglish-
dc.publisherAMER PHYSICAL SOC-
dc.titleLong-range Coulomb interaction effects on the topological phase transitions between semimetals and insulators-
dc.typeArticle-
dc.identifier.wosid000434016100001-
dc.identifier.scopusid2-s2.0-85048404444-
dc.type.rimsART-
dc.citation.volume97-
dc.citation.issue24-
dc.citation.beginningpage241101-
dc.citation.publicationnamePHYSICAL REVIEW B-
dc.identifier.doi10.1103/PhysRevB.97.241101-
dc.contributor.localauthorMoon, Eun-Gook-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusQUANTUM CRITICALITY-
dc.subject.keywordPlusDIRAC SEMIMETAL-
dc.subject.keywordPlusSUPERCONDUCTORS-
dc.subject.keywordPlusDIMENSIONS-
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