Probing Spin Polarization with Andreev Reflection: A Theoretical Basis
I. I. Mazin, A. A. Golubov, B. Nadgorny
Abstract
Andreev reflection at the interface between a ferromagnet and a superconductor has become a foundation of a versatile new technique of measuring the spin polarization of magnetic materials. In this paper we will briefly outline a general theory of Andreev reflection for spin-polarized systems and arbitrary Fermi surface in two limiting cases of ballistic and diffusive transport
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