Unpaired Electrons in the Heavy-Fermion Superconductor CeCoIn_{5}

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dc.creatorTanatar, M. A.
dc.creatorPaglione, Johnpierre
dc.creatorNakatsuji, S.
dc.creatorHawthorn, D. G.
dc.creatorBoaknin, E.
dc.creatorHill, R. W.
dc.creatorRonning, F.
dc.creatorSutherland, M.
dc.creatorTaillefer, Louis
dc.creatorPetrovic, C.
dc.creatorCanfield, P. C.
dc.creatorFisk, Z.
dc.date2005-03-14
dc.date2005-08-10
dc.date.accessioned2026-07-25T15:49:17Z
dc.descriptionThermal conductivity and specific heat were measured in the superconducting state of the heavy fermion material Ce_{1-x}La_{x}CoIn_{5}. With increasing impurity concentration x, the suppression of T_{c} is accompanied by the increase in the residual electronic specific heat expected of a d-wave superconductor, but it occurs in parallel with a decrease in residual electronic thermal conductivity. This contrasting behavior reveals the presence of uncondensed electrons coexisting with nodal quasiparticles. An extreme multiband scenario is proposed, with a d-wave superconducting gap on the heavy-electron sheets of the Fermi surface and a negligible gap on the light, three-dimensional pockets.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0503342
dc.identifierhttp://arxiv.org/abs/cond-mat/0503342
dc.identifierPhys. Rev. Lett. 95, 067002 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.067002
dc.identifier.urihttps://dspace.dare.co.zw/handle/123456789/37232
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleUnpaired Electrons in the Heavy-Fermion Superconductor CeCoIn_{5}
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