초전도 Sr2VO3FeAs에서 상관효과
DC Field | Value | Language |
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dc.contributor.author | 이관우 | - |
dc.date.accessioned | 2021-09-08T08:53:34Z | - |
dc.date.available | 2021-09-08T08:53:34Z | - |
dc.date.created | 2021-06-17 | - |
dc.date.issued | 2010 | - |
dc.identifier.issn | 1229-4764 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/118199 | - |
dc.description.abstract | In the superconducting Sr2VO3FeAs, containing bimetallic layers, with maximum Tc≈ 46 K correlation effects on V ions have been investigated using LDA+U method. Within the local density approximation (LDA) this system has the one-third filled t2g manifold of V,decomposed into dxy of bandwidth W=2 eV and nearly degenerate dzxdyz of W=1 eV. Consideration of correlation effects leads to a metal-insulator transition on V ions t [수식] →d[수식] d[수식] at the critical on-site Coulomb repulsion Uc= 3.5 eV. At U=4 eV, the electronic structure, in which V ions are insulating, leads to several van Hove singularities near EF and similar Fermiology with other pnictides. Applying U to V ions results in increasing Fe moment as well as V moment, indicating somewhat hybridization between Fe and V ions even though this system is strongly 2-dimesional. Our results show possible importance of correlation effects on this system. | - |
dc.language | Korean | - |
dc.language.iso | ko | - |
dc.publisher | 한국초전도학회 | - |
dc.title | 초전도 Sr2VO3FeAs에서 상관효과 | - |
dc.title.alternative | Correlation Effects in Superconducting Sr2VO3FeAs | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | 이관우 | - |
dc.identifier.bibliographicCitation | Progress in Superconductivity, v.12, no.1, pp.46 - 50 | - |
dc.relation.isPartOf | Progress in Superconductivity | - |
dc.citation.title | Progress in Superconductivity | - |
dc.citation.volume | 12 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 46 | - |
dc.citation.endPage | 50 | - |
dc.type.rims | ART | - |
dc.identifier.kciid | ART001489492 | - |
dc.description.journalClass | 2 | - |
dc.description.journalRegisteredClass | kci | - |
dc.subject.keywordAuthor | Fe-pnictides | - |
dc.subject.keywordAuthor | Correlation effects | - |
dc.subject.keywordAuthor | Sr2VO3FeAs | - |
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