Suppression of Giant Magnetoresistance by a superconducting contact

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dc.creatorTaddei, F.
dc.creatorSanvito, S.
dc.creatorJefferson, J. H.
dc.creatorLambert, C. J.
dc.date1999-01-29
dc.date.accessioned2026-07-07T06:31:30Z
dc.date.available2026-07-07T06:31:30Z
dc.descriptionWe predict that current perpendicular to the plane (CPP) giant magnetoresistance (GMR) in a phase-coherent magnetic multilayer is suppressed when one of the contacts is superconducting. This is a consequence of a superconductivity-induced magneto-resistive (SMR) effect, whereby the conductance of the ferromagnetically aligned state is drastically reduced by superconductivity. To demonstrate this effect, we compute the GMR ratio of clean (Cu/Co)_nCu and (Cu/Co)_nPb multilayers, described by an ab-initio spd tight binding Hamiltonian. By analyzing a simpler model with two orbitals per site, we also show that the suppression survives in the presence of elastic scattering by impurities.
dc.description5 pages, 4 figures. Submitted to PRL
dc.identifierhttps://arxiv.org/abs/cond-mat/9901347
dc.identifierhttp://arxiv.org/abs/cond-mat/9901347
dc.identifierPhys. Rev. Lett. 82, 004938 (1999)
dc.identifierdoi:10.1103/PhysRevLett.82.4938
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98622
dc.subjectMesoscale and Nanoscale Physics
dc.subjectSuperconductivity
dc.titleSuppression of Giant Magnetoresistance by a superconducting contact
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