Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Seo, Yuil | - |
dc.contributor.author | Choi, Woo-jae | - |
dc.contributor.author | Kimura, Shin-ichi | - |
dc.contributor.author | Kwon, Yong Seung | - |
dc.date.accessioned | 2019-03-29T04:57:56Z | - |
dc.date.available | 2019-03-29T04:57:56Z | - |
dc.date.created | 2019-03-28 | - |
dc.date.issued | 2019-03 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/9689 | - |
dc.description.abstract | For high-T c superconductors, clarifying the role and origin of the pseudogap is essential for understanding the pairing mechanism. Among the various models describing the pseudogap, the preformed Cooper pair model is a potential candidate. Therefore, we present experimental evidence for the preformed Cooper pair model by studying the pseudogap spectrum observed in the optical conductivity of a Ca 10 (Pt 4 As 8 )(Fe 2 As 2 ) 5 (T c = 34.6 K) single crystal. We observed a clear pseudogap structure in the optical conductivity and observed its temperature dependence. In the superconducting (SC) state, one SC gap with a gap size of Δ = 26 cm −1 , a scattering rate of 1/τ = 360 cm −1 and a low-frequency extra Drude component were observed. Spectral weight analysis revealed that the SC gap and pseudogap are formed from the same Drude band. This means that the pseudogap is a gap structure observed as a result of a continuous temperature evolution of the SC gap observed below T c . This provides clear experimental evidence for the preformed Cooper pair model. © 2019, The Author(s). | - |
dc.language | English | - |
dc.publisher | Nature Publishing Group | - |
dc.title | Evidence for a preformed Cooper pair model in the pseudogap spectra of a Ca-10(Pt4As8)(Fe2As2)(5) single crystal with a nodal superconducting gap | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41598-019-40528-3 | - |
dc.identifier.scopusid | 2-s2.0-85062592592 | - |
dc.identifier.bibliographicCitation | Scientific Reports, v.9, no.1 | - |
dc.description.isOpenAccess | TRUE | - |
dc.subject.keywordPlus | STATE | - |
dc.subject.keywordPlus | SYMMETRY | - |
dc.subject.keywordPlus | PHASE | - |
dc.citation.number | 1 | - |
dc.citation.title | Scientific Reports | - |
dc.citation.volume | 9 | - |