Superconducting Properties of Disordered Films of Zn

Abstract

The superconducting transition temperature T c and the critical magnetic field H c of thin Zn films were measured. T c decreases almost linearly as the normal-state sheet resistivity increases. H c ( T ) is enhanced compared with the conventional value for dirty superconductors. These results are explained by the localization and electron-electron interaction theories for two-dimensional disordered superconductors.