Disorder and superconductivity in connection with high Tc

There is a growing interest in the interplay between disorder and superconductivity in high Tc phenomenon. After a short review of the field in this paper, the authors discuss the work done both on the Anderson-Hubbard model (semianalytically and numerically) and in the model which describes both extended and localized excitation. Enhancement of the superconducting pairing with disorder appears in some of the approaches