Robust spin transfer torque in antiferromagnetic tunnel junctions

Handle URI:
http://hdl.handle.net/10754/623414
Title:
Robust spin transfer torque in antiferromagnetic tunnel junctions
Authors:
Saidaoui, Hamed Ben Mohamed ( 0000-0003-3110-0912 ) ; Waintal, Xavier; Manchon, Aurelien ( 0000-0002-4768-293X )
Abstract:
We theoretically study the current-induced spin torque in antiferromagnetic tunnel junctions, composed of two semi-infinite antiferromagnetic layers separated by a tunnel barrier, in both clean and disordered regimes. We find that the torque enabling electrical manipulation of the Néel antiferromagnetic order parameter is out of plane, ∼n×p, while the torque competing with the antiferromagnetic exchange is in plane, ∼n×(p×n). Here, p and n are the Néel order parameter direction of the reference and free layers, respectively. Their bias dependence shows behavior similar to that in ferromagnetic tunnel junctions, the in-plane torque being mostly linear in bias, while the out-of-plane torque is quadratic. Most importantly, we find that the spin transfer torque in antiferromagnetic tunnel junctions is much more robust against disorder than that in antiferromagnetic metallic spin valves due to the tunneling nature of spin transport.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Saidaoui HBM, Waintal X, Manchon A (2017) Robust spin transfer torque in antiferromagnetic tunnel junctions. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.134424.
Publisher:
American Physical Society (APS)
Journal:
Physical Review B
KAUST Grant Number:
OSR-2015-CRG4-2626
Issue Date:
18-Apr-2017
DOI:
10.1103/PhysRevB.95.134424
Type:
Article
ISSN:
2469-9950; 2469-9969
Sponsors:
A.M. acknowledges the financial support of the King Abdullah University of Science and Technology (KAUST) through the Office of Sponsored Research (OSR; Grant No. OSR-2015-CRG4-2626).
Additional Links:
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.134424
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSaidaoui, Hamed Ben Mohameden
dc.contributor.authorWaintal, Xavieren
dc.contributor.authorManchon, Aurelienen
dc.date.accessioned2017-05-09T08:34:34Z-
dc.date.available2017-05-09T08:34:34Z-
dc.date.issued2017-04-18en
dc.identifier.citationSaidaoui HBM, Waintal X, Manchon A (2017) Robust spin transfer torque in antiferromagnetic tunnel junctions. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.134424.en
dc.identifier.issn2469-9950en
dc.identifier.issn2469-9969en
dc.identifier.doi10.1103/PhysRevB.95.134424en
dc.identifier.urihttp://hdl.handle.net/10754/623414-
dc.description.abstractWe theoretically study the current-induced spin torque in antiferromagnetic tunnel junctions, composed of two semi-infinite antiferromagnetic layers separated by a tunnel barrier, in both clean and disordered regimes. We find that the torque enabling electrical manipulation of the Néel antiferromagnetic order parameter is out of plane, ∼n×p, while the torque competing with the antiferromagnetic exchange is in plane, ∼n×(p×n). Here, p and n are the Néel order parameter direction of the reference and free layers, respectively. Their bias dependence shows behavior similar to that in ferromagnetic tunnel junctions, the in-plane torque being mostly linear in bias, while the out-of-plane torque is quadratic. Most importantly, we find that the spin transfer torque in antiferromagnetic tunnel junctions is much more robust against disorder than that in antiferromagnetic metallic spin valves due to the tunneling nature of spin transport.en
dc.description.sponsorshipA.M. acknowledges the financial support of the King Abdullah University of Science and Technology (KAUST) through the Office of Sponsored Research (OSR; Grant No. OSR-2015-CRG4-2626).en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.134424en
dc.rightsArchived with thanks to Physical Review Ben
dc.titleRobust spin transfer torque in antiferromagnetic tunnel junctionsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionUniversity Grenoble Alpes, INAC-PHELIQS, Grenoble, F-38000, , Franceen
dc.contributor.institutionCEA, INAC-PHELIQS, Grenoble, F-38000, , Franceen
kaust.authorSaidaoui, Hamed Ben Mohameden
kaust.authorManchon, Aurelienen
kaust.grant.numberOSR-2015-CRG4-2626en
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