The gap symmetry is marginal in high-Tc superconductivity: Isotropic s-wave pairing leads to either s or d-wave gap depending on the Coulomb pseudopotential

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dc.creatorVarelogiannis, G.
dc.date1995-11-30
dc.date.accessioned2026-07-07T03:08:03Z
dc.date.available2026-07-07T03:08:03Z
dc.descriptionWe point out that in two-dimensional systems like high-$T_c$ superconductors, an isotropic s-wave electron-phonon interaction in the momentum decoupling regime leads to either s or d-wave superconductivity depending on the conventional values of the Coulomb pseudopotential. It is therefore possible that $YBa_2Cu_3O_7$ is an anisotropic d-wave and $Bi_2Sr_2CaCu_2O_8$ an anisotropic s-wave superconductor both having the same pairing interaction and similar $T_c$'s. A transition from s-wave to d-wave superconductivity may also be possible by adjusting the doping.
dc.descriptionSubmitted for publication some weeks ago, four pages revtex, four figures available upon request to varelogi@venus.roma1.infn.it
dc.identifierhttps://arxiv.org/abs/cond-mat/9511139
dc.identifierhttp://arxiv.org/abs/cond-mat/9511139
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27405
dc.subjectCondensed Matter
dc.titleThe gap symmetry is marginal in high-Tc superconductivity: Isotropic s-wave pairing leads to either s or d-wave gap depending on the Coulomb pseudopotential
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