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  • Relativistic Néel-order fie...
    Železný, J; Gao, H; Výborný, K; Zemen, J; Mašek, J; Manchon, Aurélien; Wunderlich, J; Sinova, Jairo; Jungwirth, T

    Physical review letters, 2014-Oct-10, Letnik: 113, Številka: 15
    Journal Article

    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 Mn(2)Au 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.