Observation of Leggett's collective mode in a multi-band MgB2 superconductor

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dc.creatorBlumberg, G.
dc.creatorMialitsin, A.
dc.creatorDennis, B. S.
dc.creatorKlein, M. V.
dc.creatorZhigadlo, N. D.
dc.creatorKarpinski, J.
dc.date2007-10-14
dc.date.accessioned2026-07-07T08:51:29Z
dc.date.available2026-07-07T08:51:29Z
dc.descriptionWe report observation of Leggett's collective mode in a multi-band MgB2 superconductor with T_c=39K arising from the fluctuations in the relative phase between two superconducting condensates. The novel mode is observed by Raman spectroscopy at 9.4 meV in the fully symmetric scattering channel. The observed mode frequency is consistent with theoretical considerations based on the first principle computations.
dc.descriptionAccepted for PRL
dc.identifierhttps://arxiv.org/abs/0710.2803
dc.identifierhttp://arxiv.org/abs/0710.2803
dc.identifierPhys. Rev. Letters 99, 227002 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.227002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/144953
dc.subjectSuperconductivity
dc.titleObservation of Leggett's collective mode in a multi-band MgB2 superconductor
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