Spin-orbit torques in locally and globally noncentrosymmetric crystals: Antiferromagnets and ferromagnets

Handle URI:
http://hdl.handle.net/10754/622847
Title:
Spin-orbit torques in locally and globally noncentrosymmetric crystals: Antiferromagnets and ferromagnets
Authors:
Železný, J.; Gao, H.; Manchon, Aurelien ( 0000-0002-4768-293X ) ; Freimuth, Frank; Mokrousov, Yuriy; Zemen, J.; Mašek, J.; Sinova, Jairo; Jungwirth, T.
Abstract:
One of the main obstacles that prevents practical applications of antiferromagnets is the difficulty of manipulating the magnetic order parameter. Recently, following the theoretical prediction [J. Železný, Phys. Rev. Lett. 113, 157201 (2014)]PRLTAO0031-900710.1103/PhysRevLett.113.157201, the electrical switching of magnetic moments in an antiferromagnet was demonstrated [P. Wadley, Science 351, 587 (2016)]SCIEAS0036-807510.1126/science.aab1031. The switching is due to the so-called spin-orbit torque, which has been extensively studied in ferromagnets. In this phenomena a nonequilibrium spin-polarization exchange coupled to the ordered local moments is induced by current, hence exerting a torque on the order parameter. Here we give a general systematic analysis of the symmetry of the spin-orbit torque in locally and globally noncentrosymmetric crystals. We study when the symmetry allows for a nonzero torque, when is the torque effective, and its dependence on the applied current direction and orientation of magnetic moments. For comparison, we consider both antiferromagnetic and ferromagnetic orders. In two representative model crystals we perform microscopic calculations of the spin-orbit torque to illustrate its symmetry properties and to highlight conditions under which the spin-orbit torque can be efficient for manipulating antiferromagnetic moments.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Železný J, Gao H, Manchon A, Freimuth F, Mokrousov Y, et al. (2017) Spin-orbit torques in locally and globally noncentrosymmetric crystals: Antiferromagnets and ferromagnets. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.014403.
Publisher:
American Physical Society (APS)
Journal:
Physical Review B
KAUST Grant Number:
OSR-2015-CRG4-2626
Issue Date:
10-Jan-2017
DOI:
10.1103/PhysRevB.95.014403
Type:
Article
ISSN:
2469-9950; 2469-9969
Sponsors:
We thank K. Vyborny for many fruitful discussions. We acknowledge support from the European Union (EU) European Research Council Advanced (Grant No. 268066), the Ministry of Education of the Czech Republic (Grant No. LM2011026), the Grant Agency of the Czech Republic (Grant No. 14-37427G), Deutsche Forschungsgemeinschaft SPP 1538, supercomputing resources at Julich Supercomputing Centre and RWTH Aachen University, DFG Transregional Collaborative Research Center (SFB/TRR) 173 Spin+X Spin in its collective environment, and the Alexander von Humboldt Foundation. Access to computing and storage facilities owned by parties and projects contributing to the National Grid Infrastructure MetaCentrum, provided under the program “Projects of Large Research, Development, and Innovations Infrastructures” (CESNET LM2015042), is greatly appreciated. A.M. acknowledges financial support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR- 2015-CRG4-2626 as well as fruitful discussions with H. B. M. Saidaoui.
Additional Links:
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.014403
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorŽelezný, J.en
dc.contributor.authorGao, H.en
dc.contributor.authorManchon, Aurelienen
dc.contributor.authorFreimuth, Franken
dc.contributor.authorMokrousov, Yuriyen
dc.contributor.authorZemen, J.en
dc.contributor.authorMašek, J.en
dc.contributor.authorSinova, Jairoen
dc.contributor.authorJungwirth, T.en
dc.date.accessioned2017-02-07T08:28:38Z-
dc.date.available2017-02-07T08:28:38Z-
dc.date.issued2017-01-10en
dc.identifier.citationŽelezný J, Gao H, Manchon A, Freimuth F, Mokrousov Y, et al. (2017) Spin-orbit torques in locally and globally noncentrosymmetric crystals: Antiferromagnets and ferromagnets. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.014403.en
dc.identifier.issn2469-9950en
dc.identifier.issn2469-9969en
dc.identifier.doi10.1103/PhysRevB.95.014403en
dc.identifier.urihttp://hdl.handle.net/10754/622847-
dc.description.abstractOne of the main obstacles that prevents practical applications of antiferromagnets is the difficulty of manipulating the magnetic order parameter. Recently, following the theoretical prediction [J. Železný, Phys. Rev. Lett. 113, 157201 (2014)]PRLTAO0031-900710.1103/PhysRevLett.113.157201, the electrical switching of magnetic moments in an antiferromagnet was demonstrated [P. Wadley, Science 351, 587 (2016)]SCIEAS0036-807510.1126/science.aab1031. The switching is due to the so-called spin-orbit torque, which has been extensively studied in ferromagnets. In this phenomena a nonequilibrium spin-polarization exchange coupled to the ordered local moments is induced by current, hence exerting a torque on the order parameter. Here we give a general systematic analysis of the symmetry of the spin-orbit torque in locally and globally noncentrosymmetric crystals. We study when the symmetry allows for a nonzero torque, when is the torque effective, and its dependence on the applied current direction and orientation of magnetic moments. For comparison, we consider both antiferromagnetic and ferromagnetic orders. In two representative model crystals we perform microscopic calculations of the spin-orbit torque to illustrate its symmetry properties and to highlight conditions under which the spin-orbit torque can be efficient for manipulating antiferromagnetic moments.en
dc.description.sponsorshipWe thank K. Vyborny for many fruitful discussions. We acknowledge support from the European Union (EU) European Research Council Advanced (Grant No. 268066), the Ministry of Education of the Czech Republic (Grant No. LM2011026), the Grant Agency of the Czech Republic (Grant No. 14-37427G), Deutsche Forschungsgemeinschaft SPP 1538, supercomputing resources at Julich Supercomputing Centre and RWTH Aachen University, DFG Transregional Collaborative Research Center (SFB/TRR) 173 Spin+X Spin in its collective environment, and the Alexander von Humboldt Foundation. Access to computing and storage facilities owned by parties and projects contributing to the National Grid Infrastructure MetaCentrum, provided under the program “Projects of Large Research, Development, and Innovations Infrastructures” (CESNET LM2015042), is greatly appreciated. A.M. acknowledges financial support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR- 2015-CRG4-2626 as well as fruitful discussions with H. B. M. Saidaoui.en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.014403en
dc.rightsArchived with thanks to Physical Review Ben
dc.titleSpin-orbit torques in locally and globally noncentrosymmetric crystals: Antiferromagnets and ferromagnetsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionInstitute of Physics ASCR, V.v.i., Cukrovarnická 10, Praha 6, 162 53, Czech Republicen
dc.contributor.institutionFaculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, Prague 2, 121 16, Czech Republicen
dc.contributor.institutionInstitut für Physik, Johannes Gutenberg Universität Mainz, Mainz, 55128, Germanyen
dc.contributor.institutionDepartment of Physics, Texas AandM University, College Station, TX, 77843-4242, United Statesen
dc.contributor.institutionPeter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich, JARA, Jülich, 52425, Germanyen
dc.contributor.institutionDepartment of Physics, Blackett Laboratory, Imperial College London, London, SW7 2AZ, United Kingdomen
dc.contributor.institutionInstitute of Physics ASCR, V.v.i., Na Slovance 1999/2, Praha 8, 182 21, Czech Republicen
dc.contributor.institutionSchool of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, United Kingdomen
kaust.authorManchon, Aurelienen
kaust.grant.numberOSR-2015-CRG4-2626en
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