Nonequilibrium Transport in Superconductor/Ferromagnet/Superconductor Diffusive Junctions: Interplay between Proximity Effect and Ferromagnetism

Abstract

The theory of the I-V characteristics in diffusive superconductor/weak ferromagnet/superconductor (SFS) junction is developed. We show that the exchange field $h$ of the ferromagnet manifests itself as an additional conductance peak at $eV\sim \Delta +h$ in the phase-coherent regime, when the Thouless energy is of the order of superconducting order parameter. The excess current exhibits non-monotonous dependence on the exchange field and non-trivial temperature behavior, which is strongly influenced by the temperature dependence of the exchange field.

5 pages, 2 figures

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Cited by in corpus (5)

• Nonequilibrium spin-dependent phenomena in mesoscopic superconductor-normal metal tunnel structures
• Multiparticle tunneling in diffusive superconducting junctions
• Josephson effect in multi-terminal superconductor-ferromagnet junctions coupled via triplet components
• Chirality and spin transformation of triplet Cooper pairs upon interaction with singlet condensate
• Proximity-driven source of highly spin-polarized ac current on the basis of superconductor/weak ferromagnet/superconductor voltage-biased Josephson junction