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Microscopic theory of equilibrium properties of F/S/F trilayers with weak ferromagnets

R. Mélin
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Abstract

The aim of this paper is to explain the non monotonic temperature dependence of the self-consistent superconducting gap of ferromagnet/superconductor/ferromagnet (F/S/F) trilayers with weak ferromagnets in the parallel alignment (equivalent to F/S bilayers). We show that this is due to Andreev bound states that compete with the formation of a minigap. Using a recursive algorithm we discuss in detail the roles of various parameters (thicknesses of the superconductor and ferromagnets, relative spin orientation of the ferromagnets, exchange field, temperature, disorder, interface transparencies).

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R. Mélin. 2004-01-23. Microscopic theory of equilibrium properties of F/S/F trilayers with weak ferromagnets. https://doi.org/10.1140/epjb%2Fe2004-00188-7

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