Effect of disordering on critical temperature of superconductors with small coherence length

Effect of disordering on the critical temperature of s-wave superconductors with a small coherence length is studied through numerical modeling. Two-dimensional Hubbard model with gravitation was used as a calculational model. Calculations are carried out within the frames of Bogolyubov approach which made it possible to account for the spatial nonuniformity of the order parameter. It is studied to what extent the account for the spatial nonuniformity of physical values effects the obtained results. The possibility of increasing the critical temperature by disordering is noted