Properties of superconductor/ferromagnet structures with spin-dependent scattering

M. Fauré; A. I. Buzdin; A. A. Golubov; M. Yu. Kupriyanov

doi:10.1103/PhysRevB.73.064505

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Properties of superconductor/ferromagnet structures with spin-dependent scattering

M. Fauré, A. I. Buzdin, A. A. Golubov, M. Yu. Kupriyanov

DOI 10.1103/PhysRevB.73.064505 · Physical Review B

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Abstract

We investigate superconductor/ferromagnet (S/F) hybrid structures in the dirty limit, described by the Usadel equations. More precisely, the oscillations of the critical temperature and critical current with the thickness of the ferromagnetic layers are studied. We show that spin-flip and spin-orbit scattering lead to the decrease of the decay length and the increase of the oscillation period. The critical current decay is more sensitive to these pair-breaking mechanisms than that of the critical temperature. These two scattering mechanisms should be taken into account to get a better agreement between experimental results and theoretical descriptions. We also study the influence of the interface transparency on the properties of S/F structures.