Print Email Facebook Twitter Spin-accumulation and Andreev-reflection in a mesoscopic ferromagnetic wire Title Spin-accumulation and Andreev-reflection in a mesoscopic ferromagnetic wire Author Belzig, W. Nazarov, Y.V. Bauer, G.E.W. Faculty Applied Sciences Date 2000-05-11 Abstract The electron transport though ferromagnetic metal-superconducting hybrid devices is considered in the non-equilibrium Green's function formalism in the quasiclassical approximation. Attention if focused on the limit in which the exchange splitting in the ferromagnet is much larger than the superconducting energy gap. Transport properties are then governed by an interplay between spin-accumulation close to the interface and Andreev reflection at the interface. We find that the resistance can either be enhanced or lowered in comparison to the normal case and can have a non-monotonic temperature and voltage dependence. In the non-linear voltage regime electron heating effects may govern the transport properties, leading to qualitative different behaviour than in the absence of heating effects. Recent experimental results on the effect of the superconductor on the conductance of the ferromagnet can be understood by our results for the energy-dependent interface resistance together with effects of spin- accumulation without invoking long range pairing correlations in the ferromagnet Subject Superconductivity To reference this document use: http://resolver.tudelft.nl/uuid:5d538e78-6594-444a-a9dd-d8df1796cfe3 DOI https://doi.org/10.1103/PhysRevB.62.9726 Publisher IOP Publishing Source e-print of Condensed Matter 0005188 (May 2000) Part of collection Institutional Repository Document type journal article Rights (c) Belzig, Nazarov and Bauer Files PDF 0005188v1.pdf 372.95 KB Close viewer /islandora/object/uuid:5d538e78-6594-444a-a9dd-d8df1796cfe3/datastream/OBJ/view