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Room-temperature spin-orbit torque in NiMnSb

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dc.contributor.authorCiccarelli, Chiara
dc.contributor.authorTshitoyan, V
dc.contributor.authorFerguson, AJ
dc.contributor.authorGerhard, F
dc.contributor.authorGould, C
dc.contributor.authorMolenkamp, LW
dc.contributor.authorGayles, J
dc.contributor.authorŽelezný, J
dc.contributor.authorŠámejkal, L
dc.contributor.authorYuan, Z
dc.contributor.authorSinova, J
dc.contributor.authorFreimuth, F
dc.contributor.authorJungwirth, T
dc.date.accessioned2019-04-26T08:56:58Z
dc.date.available2019-04-26T08:56:58Z
dc.date.issued16/05/16
dc.descriptionMaterials that crystallize in diamond-related lattices, with Si and GaAs as their prime examples, are at the foundation of modern electronics. Simultaneously, inversion asymmetries in their crystal structure and relativistic spin-orbit coupling led to discoveries of non-equilibrium spin-polarization phenomena that are now extensively explored as an electrical means for manipulating magnetic moments in a variety of spintronic structures. Current research of these relativistic spin-orbit torques focuses primarily on magnetic transition-metal multilayers. The low-temperature diluted magnetic semiconductor (Ga, Mn)As, in which spin-orbit torques were initially discovered, has so far remained the only example showing the phenomenon among bulk non-centrosymmetric ferromagnets. Here we present a general framework, based on the complete set of crystallographic point groups, for identifying the potential presence and symmetry of spin-orbit torques in non-centrosymmetric crystals. Among the candidate room-temperature ferromagnets we chose to use NiMnSb, which is a member of the broad family of magnetic Heusler compounds. By performing all-electrical ferromagnetic resonance measurements in single-crystal epilayers of NiMnSb we detect room-temperature spin-orbit torques generated by effective fields of the expected symmetry and of a magnitude consistent with our ab initio calculations.
dc.identifier.urihttps://demo7.dspace.org/handle/123456789/441
dc.languageen
dc.publisherNature Publishing Group
dc.titleRoom-temperature spin-orbit torque in NiMnSb
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