Relation between Superconducting Gap Minima and Nesting Vector in YNi2B2C

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dc.creatorBaba, T.
dc.creatorYokoya, T.
dc.creatorTsuda, S.
dc.creatorWatanabe, T.
dc.creatorNohara, M.
dc.creatorOguchi, H. Takagi T.
dc.creatorShin, S.
dc.date2008-12-02
dc.date.accessioned2026-07-07T12:08:34Z
dc.date.available2026-07-07T12:08:34Z
dc.descriptionWe have performed ultrahigh-resolution angle-resolved photoemission spectroscopy to directly observe the large superconducting (SC) gap anisotropy (GA) of YNi2B2C. The result shows large SC GA with a smooth variation along an intersection of a Fermi surface (FS) around the $Γ$-Z line and nearly isotropic SC gap values for two intersections of FSs around the X-P line but with a point-like non-zero minimum only for one sheet. The point-like SC gap minimum can be connected by the nesting vector reported from band calculations. The results show unexpectedly complicated SC GA of borocarbide superconductors.
dc.description13 pages, 4 figures, submitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/0812.0406
dc.identifierhttp://arxiv.org/abs/0812.0406
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209360
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleRelation between Superconducting Gap Minima and Nesting Vector in YNi2B2C
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