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Spin torque on magnetic domain walls exerted by supercurrents

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  • P. D. Sacramento
  • M. A.N. Araújo

Abstract

We calculate the spin density, spin currents and spin torque due to a spin polarized current on a magnetic domain wall juxtaposed to or inserted in a conventional superconductor. The superconductor is part of a heterostructure of the type NSN or FSF. In general, the spin torque exerted on the domain wall is weaker with respect to a normal metal. However, there are regimes where the torque is enhanced with respect to the normal metal. In these regimes the motion of the domain wall is therefore more efficient. A notable case is the passing of an unpolarized current which leads to a finite torque in the case of the superconductor. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Suggested Citation

  • P. D. Sacramento & M. A.N. Araújo, 2010. "Spin torque on magnetic domain walls exerted by supercurrents," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 76(2), pages 251-259, July.
  • Handle: RePEc:spr:eurphb:v:76:y:2010:i:2:p:251-259
    DOI: 10.1140/epjb/e2010-00178-2
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