Superconducting properties of multilayers composed of a superconductor, a normal metal and a weak ferromagnet are theoretically studied, based on the theory of proximity effect. The physical quantities of the multilayers are calculated taking account of the difference in the densities of states, the diffusion constants, the attractive interaction constants, and the spin susceptibilities of the layering materials. Various behaviors of the upper critical fields which have been observed in the multilayers are explained in a unified manner.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering