Superconductivity in the Kondo lattice model

Details Superconductivity in the Kondo lattice model Superconductivity in the Kondo lattice model

2009-08-28

arxiv.org/abs/0908.4141v1

Physics

Condensed Matter

Strongly Correlated Electrons

Submitted to ICM 2009 Conference Proceedings

Scientific paper

We study the Kondo lattice model with additional attractive interaction between the conduction electrons within the dynamical mean-field theory using the numerical renormalization group to solve the effective quantum impurity problem. In addition to normal-state and magnetic phases we also allow for the occurrence of a superconducting phase. In the normal phase we observe a very sensitive dependence of the low-energy scale on the conduction-electron interaction. We discuss the dependence of the superconducting transition on the interplay between attractive interaction and Kondo exchange.

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