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    Relativistic Néel-Order Fields Induced by Electrical Current in Antiferromagnets

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    PhysRevLett.113.157201.pdf
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    Type
    Article
    Authors
    Železný, J.
    Gao, H.
    Výborný, K.
    Zemen, J.
    Mašek, J.
    Manchon, Aurelien cc
    Wunderlich, J.
    Sinova, Jairo
    Jungwirth, T.
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Spintronics Theory Group
    Date
    2014-10-06
    Permanent link to this record
    http://hdl.handle.net/10754/346752
    
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    Abstract
    We predict that a lateral electrical current in antiferromagnets can induce nonequilibrium Néel-order fields, i.e., fields whose sign alternates between the spin sublattices, which can trigger ultrafast spin-axis reorientation. Based on microscopic transport theory calculations we identify staggered current-induced fields analogous to the intraband and to the intrinsic interband spin-orbit fields previously reported in ferromagnets with a broken inversion-symmetry crystal. To illustrate their rich physics and utility, we consider bulk Mn2Au with the two spin sublattices forming inversion partners, and a 2D square-lattice antiferromagnet with broken structural inversion symmetry modeled by a Rashba spin-orbit coupling. We propose an antiferromagnetic memory device with electrical writing and reading.
    Citation
    Relativistic Néel-Order Fields Induced by Electrical Current in Antiferromagnets 2014, 113 (15) Physical Review Letters
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review Letters
    DOI
    10.1103/PhysRevLett.113.157201
    arXiv
    1410.8296
    Additional Links
    http://link.aps.org/doi/10.1103/PhysRevLett.113.157201
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevLett.113.157201
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Spintronics Theory Group; Material Science and Engineering Program

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