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dc.contributor.authorManchon, Aurelien
dc.date.accessioned2017-05-31T11:23:13Z
dc.date.available2017-05-31T11:23:13Z
dc.date.issued2017-02-01
dc.identifier.citationManchon A (2017) Spin diffusion and torques in disordered antiferromagnets. Journal of Physics: Condensed Matter 29: 104002. Available: http://dx.doi.org/10.1088/1361-648X/aa521d.
dc.identifier.issn0953-8984
dc.identifier.issn1361-648X
dc.identifier.doi10.1088/1361-648X/aa521d
dc.identifier.urihttp://hdl.handle.net/10754/623912
dc.description.abstractWe have developed a drift-diffusion equation of spin transport in collinear bipartite metallic antiferromagnets. Starting from a model tight-binding Hamiltonian, we obtain the quantum kinetic equation within Keldysh formalism and expand it to the lowest order in spatial gradient using Wigner expansion method. In the diffusive limit, these equations track the spatio-temporal evolution of the spin accumulations and spin currents on each sublattice of the antiferromagnet. We use these equations to address the nature of the spin transfer torque in (i) a spin-valve composed of a ferromagnet and an antiferromagnet, (ii) a metallic bilayer consisting of an antiferromagnet adjacent to a heavy metal possessing spin Hall effect, and in (iii) a single antiferromagnet possessing spin Hall effect. We show that the latter can experience a self-torque thanks to the non-vanishing spin Hall effect in the antiferromagnet.
dc.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology (KAUST) through the Office of Sponsored Research (OSR) (Grant Number OSR- 2015-CRG4-2626). The author acknowledges inspiring discussions with T Jungwirth, J Sinova, J Zelezny, H Gomonay and H Saidaoui.
dc.publisherIOP Publishing
dc.relation.urlhttp://iopscience.iop.org/article/10.1088/1361-648X/aa521d/meta;jsessionid=537FE0C78018F45A950F11D210A08C03.c1.iopscience.cld.iop.org
dc.rightsThis is an author-created, un-copyedited version of an article accepted for publication/published in Journal of Physics: Condensed Matter. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1361-648X/aa521d.
dc.subjectantiferromagnets
dc.subjectspin transfer torque
dc.subjectspintronics
dc.titleSpin diffusion and torques in disordered antiferromagnets
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSpintronics Theory Group
dc.identifier.journalJournal of Physics: Condensed Matter
dc.eprint.versionPost-print
dc.identifier.arxividarXiv:1608.00140
kaust.personManchon, Aurelien
kaust.grant.numberOSR- 2015-CRG4-2626
refterms.dateFOA2018-01-31T00:00:00Z
dc.date.published-online2017-02-01
dc.date.published-print2017-03-15


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