SUPERCONDUCTIVITY IN THE WEAK-HOPPING ANDERSON LATTICE MODEL WITH FINITE ON-SITE REPULSION

We study the weak-hopping Anderson lattice with finite on-site Coulomb repulsion U. In the cases when the mean number of electrons per site n is smaller than 1 or larger than 3 we study the model with arbitrary U and we find the absence of singlet d-like and triplet superconductivity. In the cases 1 < n < 2 and 2 < n < 3 we study the model in the limit - E0 >> V, \E0 + U\ << U, where E0 is the f-level and V is the hybridization parameter. In these cases we find the possibility of singlet d-like superconductivity and the absence of triplet superconductivity.