Phonon Softening in Superconducting Diamond

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dc.creatorHoesch, M.
dc.creatorFukuda, T.
dc.creatorTakenouchi, T.
dc.creatorSutter, J. P.
dc.creatorTsutsui, S.
dc.creatorBaron, A. Q. R.
dc.creatorNagao, M.
dc.creatorTakano, Y.
dc.creatorKawarada, H.
dc.creatorMizuki, J.
dc.date2005-12-18
dc.date2007-04-13
dc.date.accessioned2026-07-07T07:56:23Z
dc.date.available2026-07-07T07:56:23Z
dc.descriptionWe observe strong softening of optical phonon modes in superconducting (Tc = 4.2 K) boron doped diamond near the Brillouin zone center using inelastic x-ray scattering from a CVD-grown highly oriented sample. The magnitude of the softening, and our observation that it becomes stronger approaching zone center, supports theoretical models suggesting a phonon-mediated pairing mechanism via coupling of optical phonon modes to Fermi surfaces around the zone center. The electron-phonon coupling parameter is determined as approximately lambda= 0.33.
dc.description4 pages, 3 figures; Version3: Completely revised, quantitative analysis of lambda; in print at Phys. Rev. B (rapid communication)
dc.identifierhttps://arxiv.org/abs/cond-mat/0512424
dc.identifierhttp://arxiv.org/abs/cond-mat/0512424
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127287
dc.subjectSuperconductivity
dc.titlePhonon Softening in Superconducting Diamond
dc.typetext

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