Crossed Andreev reflection in structures consisting of a superconductor with ferromagnetic leads

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Abstract
A theory of crossed Andreev reflection in structures consisting of a superconductor with two ferromagnetic leads is presented. The electric current due to the crossed Andreev reflection strongly depends on the relative orientation of the magnetization of two ferromagnetic leads. It is shown that the dependence of the electric current and magnetoresistance on the distance between two ferromagnetic leads is understood by considering the interference between the wave functions in ferromagnets. The current and magnetoresistance are calculated as functions of the exchange field and height of the interfacial barriers.

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