Effect of Paramagnetic Atoms on the Energy Gap of Superconductors

Abstract

The effects of paramagnetic impurities in superconductin films, and of paramagnetic films superimposed on superconducting films, on the transition properties and superconducting energy gaps of these superconducting films are examined. The effects are studied by measuring the d-c resistivity (to determine the transition temperature) and the tunneling supercurrent (to determine the energy gap or density of states). (T.F.H.)