Magnetic properties of weakly coupled superconducting grains

Abstract

We investigate the thermodynamic properties of weakly coupled superconducting grains in a magnetic field. Starting from the mean field approximation, we treat the induced field and the nonlinearities self-consistently. Close to but slightly below Tc(H), the order parameter, the magnetization and the variance of the induced-field distribution. Recent experiments on high-Tcmaterials are consistent with these predictions. © 1988 Springer-Verlag.