Intraband and interband spin-orbit torques in noncentrosymmetric ferromagnets

Handle URI:
http://hdl.handle.net/10754/555680
Title:
Intraband and interband spin-orbit torques in noncentrosymmetric ferromagnets
Authors:
Li, Hang; Gao, H.; Zârbo, Liviu P.; Výborný, K.; Wang, Xuhui; Garate, Ion; Dogan, Fatih; Čejchan, A.; Sinova, Jairo; Jungwirth, T.; Manchon, Aurelien ( 0000-0002-4768-293X )
Abstract:
Intraband and interband contributions to the current-driven spin-orbit torque in magnetic materials lacking inversion symmetry are theoretically studied using the Kubo formula. In addition to the current-driven fieldlike torque TFL=τFLm×uso (uso being a unit vector determined by the symmetry of the spin-orbit coupling), we explore the intrinsic contribution arising from impurity-independent interband transitions and producing an anti-damping-like torque of the form TDL=τDLm×(uso×m). Analytical expressions are obtained in the model case of a magnetic Rashba two-dimensional electron gas, while numerical calculations have been performed on a dilute magnetic semiconductor (Ga,Mn)As modeled by the Kohn-Luttinger Hamiltonian exchange coupled to the Mn moments. Parametric dependencies of the different torque components and similarities to the analytical results of the Rashba two-dimensional electron gas in the weak disorder limit are described.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Intraband and interband spin-orbit torques in noncentrosymmetric ferromagnets 2015, 91 (13) Physical Review B
Publisher:
American Physical Society (APS)
Journal:
Physical Review B
Issue Date:
1-Apr-2015
DOI:
10.1103/PhysRevB.91.134402
ARXIV:
arXiv:1501.03292
Type:
Article
ISSN:
1098-0121; 1550-235X
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevB.91.134402; http://arxiv.org/abs/1501.03292
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLi, Hangen
dc.contributor.authorGao, H.en
dc.contributor.authorZârbo, Liviu P.en
dc.contributor.authorVýborný, K.en
dc.contributor.authorWang, Xuhuien
dc.contributor.authorGarate, Ionen
dc.contributor.authorDogan, Fatihen
dc.contributor.authorČejchan, A.en
dc.contributor.authorSinova, Jairoen
dc.contributor.authorJungwirth, T.en
dc.contributor.authorManchon, Aurelienen
dc.date.accessioned2015-05-25T11:53:51Zen
dc.date.available2015-05-25T11:53:51Zen
dc.date.issued2015-04-01en
dc.identifier.citationIntraband and interband spin-orbit torques in noncentrosymmetric ferromagnets 2015, 91 (13) Physical Review Ben
dc.identifier.issn1098-0121en
dc.identifier.issn1550-235Xen
dc.identifier.doi10.1103/PhysRevB.91.134402en
dc.identifier.urihttp://hdl.handle.net/10754/555680en
dc.description.abstractIntraband and interband contributions to the current-driven spin-orbit torque in magnetic materials lacking inversion symmetry are theoretically studied using the Kubo formula. In addition to the current-driven fieldlike torque TFL=τFLm×uso (uso being a unit vector determined by the symmetry of the spin-orbit coupling), we explore the intrinsic contribution arising from impurity-independent interband transitions and producing an anti-damping-like torque of the form TDL=τDLm×(uso×m). Analytical expressions are obtained in the model case of a magnetic Rashba two-dimensional electron gas, while numerical calculations have been performed on a dilute magnetic semiconductor (Ga,Mn)As modeled by the Kohn-Luttinger Hamiltonian exchange coupled to the Mn moments. Parametric dependencies of the different torque components and similarities to the analytical results of the Rashba two-dimensional electron gas in the weak disorder limit are described.en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.91.134402en
dc.relation.urlhttp://arxiv.org/abs/1501.03292en
dc.rightsArchived with thanks to Physical Review B ©2015 American Physical Societyen
dc.titleIntraband and interband spin-orbit torques in noncentrosymmetric ferromagnetsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Physics, Texas A&M University, College Station, Texas 77843-4242, USAen
dc.contributor.institutionInstitute of Physics, Johannes Gutenberg Universität, 55128 Mainz, Germanyen
dc.contributor.institutionMolecular and Biomolecular Physics Department, National Institute for Research and Development of Isotopic and Molecular Technologies, RO-400293 Cluj-Napoca, Romaniaen
dc.contributor.institutionInstitute of Physics ASCR, v.v.i., Cukrovarnická 10, 162 53 Praha 6, Czech Republicen
dc.contributor.institutionDépartement de Physique and Regroupement Québécois sur les Matériaux de Pointe, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1en
dc.contributor.institutionSchool of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdomen
dc.identifier.arxividarXiv:1501.03292en
kaust.authorWang, Xuhuien
kaust.authorManchon, Aurelienen
kaust.authorLi, Hangen
kaust.authorDogan, Fatihen
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