Crystalline topological Dirac semimetal phase in rutile structure β′-PtO2
DC Field | Value | Language |
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dc.contributor.author | Rokyeon Kim | - |
dc.contributor.author | Bohm-Jung Yang | - |
dc.contributor.author | Choong H. Kim | - |
dc.date.available | 2019-05-02T08:09:44Z | - |
dc.date.created | 2019-02-18 | - |
dc.date.issued | 2019-01 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/5748 | - |
dc.description.abstract | Based on first-principles calculations and symmetry analysis, we propose that a transition-metal rutile oxide, in particular β′-PtO2, can host a three-dimensional topological Dirac semimetal phase. We find that β′-PtO2 possesses an inner nodal chain structure when spin-orbit coupling is neglected. Incorporating spin-orbit coupling gaps the nodal chain while preserving a single pair of three-dimensional Dirac points protected by a screw rotation symmetry. These Dirac points are created by a band inversion of two d bands, which is a realization of a Dirac semimetal phase in a correlated electron system. Moreover, a mirror plane in the momentum space carries a nontrivial mirror Chern number nM=-2, which distinguishes β′-PtO2 from the Dirac semimetals known so far, such as Na3Bi and Cd3As2. If we apply a perturbation that breaks the rotation symmetry and preserves the mirror symmetry, the Dirac points are gapped, and the system becomes a topological crystalline insulator. © 2019 American Physical Society | - |
dc.description.uri | 1 | - |
dc.language | 영어 | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Crystalline topological Dirac semimetal phase in rutile structure β′-PtO2 | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000455827900005 | - |
dc.identifier.scopusid | 2-s2.0-85060396380 | - |
dc.identifier.rimsid | 67044 | - |
dc.contributor.affiliatedAuthor | Rokyeon Kim | - |
dc.contributor.affiliatedAuthor | Bohm-Jung Yang | - |
dc.contributor.affiliatedAuthor | Choong H. Kim | - |
dc.identifier.doi | 10.1103/PhysRevB.99.045130 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW B, v.99, no.4, pp.045130 | - |
dc.citation.title | PHYSICAL REVIEW B | - |
dc.citation.volume | 99 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 045130 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |