The effect of magnetic impurities in the normal-metal side of a normal-metal-superconductor (N-S) "dirty" sandwich on the transition temperature of the sandwich is considered. We derive a sum rule for the kernel of the gap equation, which enables us to obtain the transition temperature in the Cooper limit. The effect of a magnetic order in the normal-metal side at temperatures close to the Curie temperature is discussed, both in the Cooper limit and in thicker films, using in the latter case Werthamer's approximation.
ASJC Scopus subject areas
- Condensed Matter Physics