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dc.contributor.authorSaidaoui, Hamed Ben Mohamed
dc.contributor.authorManchon, Aurelien
dc.contributor.authorWaintal, Xavier
dc.date.accessioned2015-05-14T08:28:01Z
dc.date.available2015-05-14T08:28:01Z
dc.date.issued2014-05-28
dc.identifier.citationSpin transfer torque in antiferromagnetic spin valves: From clean to disordered regimes 2014, 89 (17) Physical Review B
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.doi10.1103/PhysRevB.89.174430
dc.identifier.urihttp://hdl.handle.net/10754/552794
dc.description.abstractCurrent-driven spin torques in metallic spin valves composed of antiferromagnets are theoretically studied using the nonequilibrium Green's function method implemented on a tight-binding model. We focus our attention on G-type and L-type antiferromagnets in both clean and disordered regimes. In such structures, spin torques can either rotate the magnetic order parameter coherently (coherent torque) or compete with the internal antiferromagnetic exchange (exchange torque). We show that, depending on the symmetry of the spin valve, the coherent and exchange torques can either be in the plane, ∝n×(q×n) or out of the plane ∝n×q, where q and n are the directions of the order parameter of the polarizer and the free antiferromagnetic layers, respectively. Although disorder conserves the symmetry of the torques, it strongly reduces the torque magnitude, pointing out the need for momentum conservation to ensure strong spin torque in antiferromagnetic spin valves.
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.89.174430
dc.relation.urlhttp://arxiv.org/abs/1403.6383
dc.rightsArchived with thanks to Physical Review B
dc.titleSpin transfer torque in antiferromagnetic spin valves: From clean to disordered regimes
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSpintronics Theory Group
dc.identifier.journalPhysical Review B
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionCEA-INAC/UJF Grenoble 1, SPSMS UMR-E 9001, Grenoble F-38054, France
dc.identifier.arxividarXiv:1403.6383
kaust.personManchon, Aurelien
kaust.personSaidaoui, Hamed Ben Mohamed
refterms.dateFOA2018-06-13T09:39:38Z
dc.date.posted2014-03-24


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