Michael M E Baumgärtel

Forschungszentrum Jülich, Jülich, North Rhine-Westphalia, Germany

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Publications (1)7.73 Total impact

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    Michael M E Baumgärtel, Michael Hell, Sourin Das, Maarten R Wegewijs
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    ABSTRACT: We show that spin anisotropy can be transferred to an isotropic system by transport of a spin-quadrupole moment. We derive the quadrupole moment current and continuity equation and study a spin-valve structure consisting of two ferromagnets coupled to a quantum dot probing an impurity spin. The quadrupole backaction on their coupled spin results in spin torques and anisotropic spin relaxation which do not follow from standard spin-current considerations. We demonstrate the detection of the impurity spin by charge transport and its manipulation by electric fields.
    Physical Review Letters 08/2011; 107(8):087202. · 7.73 Impact Factor

Publication Stats

1 Citation
7.73 Total Impact Points

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Institutions

  • 2011
    • Forschungszentrum Jülich
      Jülich, North Rhine-Westphalia, Germany