Show simple item record

dc.contributor.authorChshiev, M.
dc.contributor.authorManchon, Aurelien
dc.contributor.authorKalitsov, A.
dc.contributor.authorRyzhanova, N.
dc.contributor.authorVedyayev, A.
dc.contributor.authorStrelkov, N.
dc.contributor.authorButler, W. H.
dc.contributor.authorDieny, B.
dc.date.accessioned2015-10-08T07:41:48Z
dc.date.available2015-10-08T07:41:48Z
dc.date.issued2015-09-21
dc.identifier.citationAnalytical description of ballistic spin currents and torques in magnetic tunnel junctions 2015, 92 (10) Physical Review B
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.doi10.1103/PhysRevB.92.104422
dc.identifier.urihttp://hdl.handle.net/10754/579490
dc.description.abstractIn this work we demonstrate explicit analytical expressions for both charge and spin currents which constitute the 2×2 spinor in magnetic tunnel junctions with noncollinear magnetizations under applied voltage. The calculations have been performed within the free electron model in the framework of the Keldysh formalism and WKB approximation. We demonstrate that spin/charge currents and spin transfer torques are all explicitly expressed through only three irreducible quantities, without further approximations. The conditions and mechanisms of deviation from the conventional sine angular dependence of both spin currents and torques are shown and discussed. It is shown in the thick barrier approximation that all tunneling transport quantities can be expressed in an extremely simplified form via Slonczewski spin polarizations and our effective spin averaged interfacial transmission probabilities and effective out-of-plane polarizations at both interfaces. It is proven that the latter plays a key role in the emergence of perpendicular spin torque as well as in the angular dependence character of all spin and charge transport considered. It is demonstrated directly also that for any applied voltage, the parallel component of spin current at the FM/I interface is expressed via collinear longitudinal spin current components. Finally, spin transfer torque behavior is analyzed in a view of transverse characteristic length scales for spin transport.
dc.language.isoen
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.92.104422
dc.rightsArchived with thanks to Physical Review B
dc.titleAnalytical description of ballistic spin currents and torques in magnetic tunnel junctions
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.institutionUniv. Grenoble Alpes, INAC-SPINTEC, F-38000 Grenoble, France
dc.contributor.institutionCNRS, SPINTEC, F-38000 Grenoble, France
dc.contributor.institutionCEA, INAC-SPINTEC, F-38000 Grenoble, France
dc.contributor.institutionMINT Center, University of Alabama, Tuscaloosa, Alabama 35487-0209, USA
dc.contributor.institutionDepartment of Physics, Moscow Lomonosov State University, Moscow 119991, Russia
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
dc.identifier.arxivid1308.2619
kaust.personManchon, Aurelien
refterms.dateFOA2018-06-14T09:18:12Z


Files in this item

Thumbnail
Name:
PhysRevB.92.104422.pdf
Size:
549.3Kb
Format:
PDF
Description:
Main article
Thumbnail
Name:
Chshiev_Code_for_Analytical_description_of_ballistic_spin_currents_and_torques_in_magnetic_tunnel_junctions.nb
Size:
248.9Kb
Format:
Unknown
Description:
Supplemental files

This item appears in the following Collection(s)

Show simple item record