Spin-Swapping Transport and Torques in Ultrathin Magnetic Bilayers

Handle URI:
http://hdl.handle.net/10754/618139
Title:
Spin-Swapping Transport and Torques in Ultrathin Magnetic Bilayers
Authors:
Saidaoui, Hamed Ben Mohamed ( 0000-0003-3110-0912 ) ; Manchon, Aurelien ( 0000-0002-4768-293X )
Abstract:
Planar spin transport in disordered ultrathin magnetic bilayers comprising a ferromagnet and a normal metal (typically used for spin pumping, spin Seebeck and spin-orbit torque experiments) is investigated theoretically. Using a tight-binding model that puts the extrinsic spin Hall effect and spin swapping on equal footing, we show that the nature of spin-orbit coupled transport dramatically depends on the ratio between the layer thickness d and the mean free path λ. While the spin Hall effect dominates in the diffusive limit (d≫λ), spin swapping dominates in the Knudsen regime (d≲λ). A remarkable consequence is that spin swapping induces a substantial fieldlike torque in the Knudsen regime.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Spin-Swapping Transport and Torques in Ultrathin Magnetic Bilayers 2016, 117 (3) Physical Review Letters
Publisher:
American Physical Society (APS)
Journal:
Physical Review Letters
Issue Date:
12-Jul-2016
DOI:
10.1103/PhysRevLett.117.036601
Type:
Article
ISSN:
0031-9007; 1079-7114
Sponsors:
A. M. acknowledges the inspiring discussions with T. Valet and H. B. M. S. thanks S. Feki and B. Hadri for their valuable technical support. This work was supported by the King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevLett.117.036601
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorSaidaoui, Hamed Ben Mohameden
dc.contributor.authorManchon, Aurelienen
dc.date.accessioned2016-08-10T06:55:46Z-
dc.date.available2016-08-10T06:55:46Z-
dc.date.issued2016-07-12-
dc.identifier.citationSpin-Swapping Transport and Torques in Ultrathin Magnetic Bilayers 2016, 117 (3) Physical Review Lettersen
dc.identifier.issn0031-9007-
dc.identifier.issn1079-7114-
dc.identifier.doi10.1103/PhysRevLett.117.036601-
dc.identifier.urihttp://hdl.handle.net/10754/618139-
dc.description.abstractPlanar spin transport in disordered ultrathin magnetic bilayers comprising a ferromagnet and a normal metal (typically used for spin pumping, spin Seebeck and spin-orbit torque experiments) is investigated theoretically. Using a tight-binding model that puts the extrinsic spin Hall effect and spin swapping on equal footing, we show that the nature of spin-orbit coupled transport dramatically depends on the ratio between the layer thickness d and the mean free path λ. While the spin Hall effect dominates in the diffusive limit (d≫λ), spin swapping dominates in the Knudsen regime (d≲λ). A remarkable consequence is that spin swapping induces a substantial fieldlike torque in the Knudsen regime.en
dc.description.sponsorshipA. M. acknowledges the inspiring discussions with T. Valet and H. B. M. S. thanks S. Feki and B. Hadri for their valuable technical support. This work was supported by the King Abdullah University of Science and Technology (KAUST).en
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevLett.117.036601en
dc.rightsArchived with thanks to Physical Review Lettersen
dc.titleSpin-Swapping Transport and Torques in Ultrathin Magnetic Bilayersen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorSaidaoui, Hamed Ben Mohameden
kaust.authorManchon, Aurelienen
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