Journal Article

FZJ-2016-02551

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Room-temperature spin–orbit torque in NiMnSb

Ciccarelli, C. ; Anderson, L. ; Tshitoyan, V. ; Ferguson, A. J. (Corresponding author) ; Gerhard, F. ; Gould, C. ; Molenkamp, L. W. ; Gayles, J. ; Železný, J. ; Šmejkal, L. ; Yuan, Z. ; Sinova, J. ; Freimuth, F.FZJ* ; Jungwirth, T.

2016
Nature Publishing Group Basingstoke

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Please use a persistent id in citations: doi:10.1038/nphys3772

Abstract: Nature Physics | Article Print Share/bookmarkRoom-temperature spin–orbit torque in NiMnSb C. Ciccarelli, L. Anderson, V. Tshitoyan, A. J. Ferguson, F. Gerhard, C. Gould, L. W. Molenkamp, J. Gayles, J. Železný, L. Šmejkal, Z. Yuan, J. Sinova, F. Freimuth & T. Jungwirth Affiliations Contributions Corresponding author Nature Physics 12, 855–860 (2016) doi:10.1038/nphys3772Received 12 February 2016 Accepted 15 April 2016 Published online 16 May 2016 Article tools PDF Citation Reprints Rights & permissions Article metricsAbstract Abstract• Introduction• Symmetry of spin–orbit fields• Measurements of spin–orbit fields in NiMnSb• Microscopic calculations of spin–orbit fields in NiMnSb• Methods• References• Acknowledgements• Author information• Supplementary information Materials 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.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)

Appears in the scientific report 2016

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 20 ; JCR ; Nationallizenz ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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