Superconductivity in the Kondo lattice: a mean-field approach
  We calculate the superconducting critical temperature T_c and the Kondo temperature T_K of the Kondo lattice, decoupling the Kondo exchange interaction in the unrestricted Hartree-Fock (HF) Bardeen-Cooper-Schrieffer (BCS) approximation. We obtain that both T_K and T_c have an exponential dependence in the Kondo coupling J_K. For optimum doping and realistic parameters, both temperatures fall in the experimentally observed range. 
M. A. Gusmao (Universidade Federal do Rio Grande do Sul, Brazil), A.   A. Aligia (Centro Atomico Bariloche, Argentina)