Local f-electron superconductivity in an interacting conduction band
L. P. Oliveira, P. D. Sacramento
DOI 10.1103/PhysRevB.66.014516 · Physical Review B
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Abstract
Using a mean-field approach we study the effect of interactions between conduction electrons on the appearance of superconductivity of local f electrons within the context of an Anderson lattice. We consider both the effects of local and nearest-neighbor Coulomb repulsions between the conduction electrons. At the mean-field level the addition of these terms renormalizes the parameters of the original Anderson Hamiltonian, as expected. At low densities the effect of the interactions is to increase the superconducting critical temperature Tc, while at high densities (n<~2) the interactions decrease Tc or suppress the superconductivity altogether.
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