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DC Field | Value | Language |
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dc.citation.number | 4 | - |
dc.citation.startPage | 045104 | - |
dc.citation.title | PHYSICAL REVIEW B | - |
dc.citation.volume | 93 | - |
dc.contributor.author | Kim, Woo Jin | - |
dc.contributor.author | Kim, So Yeun | - |
dc.contributor.author | Kim, Choong H. | - |
dc.contributor.author | Sohn, Chang Hee | - |
dc.contributor.author | Korneta, O. B. | - |
dc.contributor.author | Chae, Seung Chul | - |
dc.contributor.author | Noh, Tae Won | - |
dc.date.accessioned | 2023-12-22T00:12:00Z | - |
dc.date.available | 2023-12-22T00:12:00Z | - |
dc.date.created | 2019-03-07 | - |
dc.date.issued | 2016-01 | - |
dc.description.abstract | We investigated the electronic structure of IrO2 to address the controversy regarding spin-orbit coupling (SOC) effects in metallic 5d transition-metal oxides. Two issues have come to the forefront: (1) SOC effects on electronic structure and physical properties of IrO2 and (2) the possible formation of a novel ground state in this material, the J(eff) = 1/2 state. To better understand the SOC mechanism, we grew epitaxial IrO2 films whose dc resistivity values were comparable with those of a single crystal. We obtained polarization-dependent optical and x-ray absorption spectra (XAS) and compared these results with those acquired using the generalized gradient approximation (GGA) and GGA + SOC calculations. From the optical spectra, peak structures were identified at 0.4 and 2.0 eV, which could only be explained using the GGA + SOC calculation. This suggests that SOC plays an important role in the electronic structure of IrO2. From the polarization-dependent O 1s XAS spectra, we observed that the empty state near the Fermi level lacks involvement of an Ir d(xy) orbital. Despite the importance of SOC in IrO2, the J(eff) = 1/2 state does not form in metallic IrO2. | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW B, v.93, no.4, pp.045104 | - |
dc.identifier.doi | 10.1103/PhysRevB.93.045104 | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.scopusid | 2-s2.0-84969759627 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/26309 | - |
dc.identifier.url | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.045104 | - |
dc.identifier.wosid | 000367665400003 | - |
dc.language | 영어 | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Spin-orbit coupling induced band structure change and orbital character of epitaxial IrO2 films | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Materials Science; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | OXIDE THIN-FILMS | - |
dc.subject.keywordPlus | IRIDIUM OXIDE | - |
dc.subject.keywordPlus | ELECTRONIC-STRUCTURE | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | RUO2 | - |
dc.subject.keywordPlus | DEPOSITION | - |
dc.subject.keywordPlus | OSO-2 | - |
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