SUPPRESSION OF SUPERCONDUCTIVITY CLOSE TO THE METAL-INSULATOR-TRANSITION IN STRONGLY DISORDERED-SYSTEMS

By means of the self-consistent theory proposed earlier for a metal-in sulator transition in strongly disordered systems, which takes into ac count interelectron interaction effects, the effects of the suppressio n of the superconducting-transition temperature T-c, caused by the for mation of a Coulomb pseudo-gap in the density of states, are studied i n a wide interval of disorder values-from a weakly disordered metal to an Anderson insulator. It is shown that the proposed theory gives a s atisfactory description of the experimental data for a number of syste ms that have been studied. (C) 1997 American Institute of Physics.