Enhancement of thermal transport in the degenerate periodic Anderson model

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dc.creatorZlatić, V.
dc.creatorMonnier, R.
dc.creatorFreericks, J. K.
dc.date2008-07-28
dc.date2008-07-29
dc.date.accessioned2026-07-07T09:53:16Z
dc.date.available2026-07-07T09:53:16Z
dc.descriptionThe low-temperature transport coefficients of the degenerate periodic SU(N) Anderson model are calculated in the limit of infinite correlation between {\it f} electrons, within the framework of dynamical mean-field theory. We establish the Fermi liquid (FL) laws in the clean limit, taking into account the quasiparticle damping. The latter yields a reduced value of the Lorenz number in the Wiedemann-Franz law. Our results indicate that the renormalization of the thermal conductivity and of the Seebeck coefficient can lead to a substantial enhancement of the electronic thermoelectric figure-of-merit at low temperature. Using the FL laws we discuss the low-temperature anomalies that show up in the electrical resistance of the intermetallic compounds with Cerium and Ytterbium ions, when studied as a function of pressure. Our calculations explain the sharp maximum of the coefficient of the $T^2$-term of the electrical resistance and the rapid variation of residual resistance found in a number of Ce and Yb intermetallics at some critical pressure.
dc.description14 pages
dc.identifierhttps://arxiv.org/abs/0807.4385
dc.identifierhttp://arxiv.org/abs/0807.4385
dc.identifierPhys. Rev. B 78, 045113 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.045113
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165890
dc.subjectStrongly Correlated Electrons
dc.titleEnhancement of thermal transport in the degenerate periodic Anderson model
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