DC Field | Value | Language |
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dc.contributor.author | BANG, YUNKYU | - |
dc.date.accessioned | 2019-04-07T19:56:22Z | - |
dc.date.available | 2019-04-07T19:56:22Z | - |
dc.date.created | 2019-03-11 | - |
dc.date.issued | 2016-11-29 | - |
dc.identifier.issn | 1367-2630 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/96267 | - |
dc.description.abstract | We studied the pairing mechanism of the heavily electron doped FeSe (HEDIS) systems, which commonly have one incipient hole band—a band top below the Fermi level by a finite energy distance εb—at Γ point and ordinary electron bands at Mpoints in Brillouin zone (BZ).We found that the system allows two degenerate superconducting solutions with the exactly same Tc in clean limit: the incipient she-gap (D-h ¹ 0,D+e ¹ 0) and se+e+-gap (Δh=0,D+e ¹ 0) solutions with different pairing cutoffs,Λsf (spin fluctuation energy) and εb, respectively. The se+e+-gap solution, in which the system dynamically renormalizes the original pairing cutoffΛsf toΛphys=εb (<Λsf), therefore actively eliminates the incipient hole band from forming Cooper pairs, but without loss of Tc, becomes immune to the impurity pair-breaking. As a result, the HEDIS systems, by dynamically tuning the pairing cutoff and therefore selecting the se+e+-pairing state, can always achieve themaximumTc—the Tc of the degenerate she solution in the ideal clean limit—latent in the original pairing interactions, even in the dirty limit. | - |
dc.language | English | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.relation.isPartOf | NEW JOURNAL OF PHYSICS | - |
dc.title | Pairing mechanism of heavily electron doped FeSe systems: dynamical tuning of the pairing cutoff energy | - |
dc.type | Article | - |
dc.identifier.doi | 10.1088/1367-2630/18/11/113054 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | NEW JOURNAL OF PHYSICS, v.18, pp.113054 - 113054 | - |
dc.identifier.wosid | 000404249200002 | - |
dc.citation.endPage | 113054 | - |
dc.citation.startPage | 113054 | - |
dc.citation.title | NEW JOURNAL OF PHYSICS | - |
dc.citation.volume | 18 | - |
dc.contributor.affiliatedAuthor | BANG, YUNKYU | - |
dc.identifier.scopusid | 2-s2.0-85007317435 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | PHASE-DIAGRAM | - |
dc.subject.keywordPlus | SUPERCONDUCTIVITY | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | MODE | - |
dc.subject.keywordAuthor | Iron-based superconductors | - |
dc.subject.keywordAuthor | heavily electron doped fese systems | - |
dc.subject.keywordAuthor | high-tc superconductivity | - |
dc.subject.keywordAuthor | renormalization of cutoff energy | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
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