Observation of superconducting gap in boron-doped diamond by laser-excited photoemission spectroscopy

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dc.creatorIshizaka, K.
dc.creatorEguchi, R.
dc.creatorTsuda, S.
dc.creatorYokoya, T.
dc.creatorKiss, T.
dc.creatorShimojima, T.
dc.creatorTogashi, T.
dc.creatorWatanabe, S.
dc.creatorChen, C. -T.
dc.creatorZhang, C. Q.
dc.creatorTakano, Y.
dc.creatorNagao, M.
dc.creatorSakaguchi, I.
dc.creatorTakenouchi, T.
dc.creatorKawarada, H.
dc.creatorShin, S.
dc.date2006-04-14
dc.date.accessioned2026-07-07T07:42:44Z
dc.date.available2026-07-07T07:42:44Z
dc.descriptionWe have investigated the low energy electronic state of a boron-doped diamond thin film by the ultrahigh resolution laser-excited photoemission spectroscopy. We observed a clear shift of the leading edge below 11 K indicative of a superconducting gap opening ($Δ\sim 0.78$ meV at 4.5 K). The gap feature is significantly broad and the well-defined quasiparticle peak is not recognizable even at the lowest temperature of measurement 4.5 K. We discuss our result in terms of possible disorder effect on superconductivity in this system.
dc.description12 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0604370
dc.identifierhttp://arxiv.org/abs/cond-mat/0604370
dc.identifierPhys. Rev. Lett. 98, 047003 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.047003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/122554
dc.subjectSuperconductivity
dc.titleObservation of superconducting gap in boron-doped diamond by laser-excited photoemission spectroscopy
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