Striking properties of Superconductor/Ferromagnet structures with spin-dependent scattering

Details Striking properties of Superconductor/Ferromagnet structures with spin-dependent scattering Striking properties of Superconductor/Ferromagnet structures with spin-dependent scattering

2006-01-31

arxiv.org/abs/cond-mat/0601707v2

Physics

Condensed Matter

Superconductivity

28 pages, 9 figures accepted for publication in Phys. Rev. B; reference added

Scientific paper

10.1103/PhysRevB.73.064505

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 oscillations 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 description. We also study the influence of the interface transparency on the properties of S/F structures.

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