Current-Induced Torques Due to Compensated Antiferromagnets

Paul M. Haney and A. H. MacDonald
Phys. Rev. Lett. 100, 196801 – Published 12 May 2008

Abstract

We analyze the influence of current-induced torques on the magnetization configuration of a ferromagnet in a circuit containing a compensated antiferromagnet. We argue that these torques are generically nonzero and determine their form by considering spin-dependent scattering at a compensated antiferromagnetic interface. Because of symmetry dictated differences in the form of the current-induced torque, the phase diagram which expresses the dependence of the ferromagnetic configuration on the current and external magnetic field differs qualitatively from its ferromagnet-only counterpart.

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  • Received 23 August 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.196801

©2008 American Physical Society

Authors & Affiliations

Paul M. Haney and A. H. MacDonald

  • Department of Physics, The University of Texas at Austin, Austin, Texas, 78712-0264, USA

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Issue

Vol. 100, Iss. 19 — 16 May 2008

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