Sign of the crossed conductances at a FSF double interface

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dc.creatorMélin, R.
dc.creatorFeinberg, D.
dc.date2004-07-12
dc.date2004-09-08
dc.date.accessioned2026-07-07T06:33:47Z
dc.date.available2026-07-07T06:33:47Z
dc.descriptionCrossed conductance in hybrid Ferromagnet / Superconductor / Ferromagnet (FSF) structures results from the competition between normal transmission and Andreev reflection channels. Crossed Andreev reflection (CAR) and elastic cotunneling (EC) between the ferromagnets are dressed by local Andreev reflections, which play an important role for transparent enough interfaces and intermediate spin polarizations. This modifies the simple result previously obtained at lowest order, and can explain the sign of the crossed resistances in a recent experiment [D. Beckmann {\sl et al.}, cond-mat/0404360]. This holds both in the multiterminal hybrid structure model (where phase averaging over the Fermi oscillations is introduced ``by hand'' within the approximation of a single non local process) and for infinite planar interfaces (where phase averaging naturally results in the microscopic solution with multiple non local processes).
dc.description9 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0407283
dc.identifierhttp://arxiv.org/abs/cond-mat/0407283
dc.identifierPhys. Rev. B 70, 174509 (2004)
dc.identifierdoi:10.1103/PhysRevB.70.174509
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/99313
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleSign of the crossed conductances at a FSF double interface
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