Part I: Proximity effect; numerical evaluation of Tc. Part II: Derivation of Boltzmann type transport equation for an impure anisotropic superconductor

Abstract

De Gennes' equation for the gap parameter in superposed films of normal and superconducting materials have been s9lved via a numerical technique. Thia is based upon a variation approach used by Silvert and Cooper. The solution indicates that the approximate anlytical procedure used by Werthamer is accurate ,for thick-dirty films. However, for thinner-cleaner films, his approximate calculation of T is shown to lead to errors as big as 25%. Our calaulation leads to an improved agreement between theory and experiment.