Effects of Fermi Surface Anisotropy on Unconventional Superconductivity in UPt_3

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dc.creatorHaran, G.
dc.creatorHirschfeld, P. J.
dc.creatorSigrist, M.
dc.date1998-03-11
dc.date.accessioned2026-07-07T03:10:07Z
dc.date.available2026-07-07T03:10:07Z
dc.descriptionWe discuss the weak-coupling BCS theory of the heavy fermion superconductor UPt_3, accounting for that system's anisotropic, multisheeted Fermi surface by expanding the order parameter and pair potential in terms of appropriate basis functions of the irreducible representations of the D_6h crystal point group. Within a phenomenological model for the electronic structure of UPt_3 chosen to capture the qualitative features of local density functional calculations and de Haas-van Alphen measurements, we show how Fermi surface anisotropy can favor pairing in certain symmetry classes, and influence the phase diagram of unconventional superconductors. We also calculate the Ginzburg-Landau coefficients, focussing on those coefficients relevant to current theories of the UPt_3 phase diagram.
dc.description26 pages, RevTex, 11 PostScript figures, to be published in J. Low Temp. Phys. (Vol. 111, Nos. 1/2, 1998)
dc.identifierhttps://arxiv.org/abs/cond-mat/9803135
dc.identifierhttp://arxiv.org/abs/cond-mat/9803135
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28145
dc.subjectSuperconductivity
dc.titleEffects of Fermi Surface Anisotropy on Unconventional Superconductivity in UPt_3
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