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dc.contributor.authorLi, Hang
dc.contributor.authorWang, Xuhui
dc.contributor.authorManchon, Aurelien
dc.date.accessioned2016-01-18T07:57:23Z
dc.date.available2016-01-18T07:57:23Z
dc.date.issued2016-01-11
dc.identifier.citationValley-dependent spin-orbit torques in two-dimensional hexagonal crystals 2016, 93 (3) Physical Review B
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.doi10.1103/PhysRevB.93.035417
dc.identifier.urihttp://hdl.handle.net/10754/593663
dc.description.abstractWe study spin-orbit torques in two-dimensional hexagonal crystals such as graphene, silicene, germanene, and stanene. The torque possesses two components, a fieldlike term due to inverse spin galvanic effect and an antidamping torque originating from Berry curvature in mixed spin-k space. In the presence of staggered potential and exchange field, the valley degeneracy can be lifted and we obtain a valley-dependent Berry curvature, leading to a tunable antidamping torque by controlling the valley degree of freedom. The valley imbalance can be as high as 100% by tuning the bias voltage or magnetization angle. These findings open new venues for the development of current-driven spin-orbit torques by structural design.
dc.language.isoen
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.93.035417
dc.rightsArchived with thanks to Physical Review B
dc.titleValley-dependent spin-orbit torques in two-dimensional hexagonal crystals
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.affiliationKing Abdullah University of Science and Technology (KAUST)
dc.identifier.arxivid1509.08060
kaust.personLi, Hang
kaust.personWang, Xuhui
kaust.personManchon, Aurelien
refterms.dateFOA2018-06-13T13:36:52Z


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