Localization corrections and small-q phonon-mediated unconventional superconductivity in the cuprates

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dc.creatorVarelogiannis, G.
dc.date2001-10-30
dc.date.accessioned2026-07-07T02:43:19Z
dc.date.available2026-07-07T02:43:19Z
dc.descriptionTaking into account the first localization corrections in the electron-impurity self-energy we study the effect of non-magnetic impurities on unconventional superconductivity (SC) mediated by small-q electron-phonon scattering. We show that when van Hove singularities are close to the Fermi level making the electronic system anisotropic as in the high-$T_c$ oxides, both the d-wave and s-wave states are sensitive to non-magnetic impurities and beyond a critical impurity concentration SC disappears in {\it both gap symmetry channels}. Impurity doping may induce a first order transition from d-wave to s-wave SC, but no saturation of the impuruty effect is reported due to the intrinsically anisotropic character of the localization corrections in this context.
dc.description4 pages and 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0110637
dc.identifierhttp://arxiv.org/abs/cond-mat/0110637
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18456
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleLocalization corrections and small-q phonon-mediated unconventional superconductivity in the cuprates
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