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000019916 084__ $$2WoS$$aPhysics, Multidisciplinary
000019916 1001_ $$0P:(DE-Juel1)VDB104713$$aBaumgärtel, M.$$b0$$uFZJ
000019916 245__ $$aTransport and accumulation of spin anisotropy
000019916 260__ $$aCollege Park, Md.$$bAPS$$c2011
000019916 300__ $$a087202
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000019916 440_0 $$04925$$aPhysical Review Letters$$v107$$x0031-9007$$y8
000019916 500__ $$3POF3_Assignment on 2016-02-29
000019916 500__ $$aWe acknowledge stimulating discussions with B. Sothmann, J. Konig, and S. Andergassen. and the financial support from NanoSci-ERA and DFG (FOR 912).
000019916 520__ $$aWe show that spin anisotropy can be transferred to an isotropic system by transport of a spin-quadrupole moment. We derive the quadrupole moment current and continuity equation and study a spin-valve structure consisting of two ferromagnets coupled to a quantum dot probing an impurity spin. The quadrupole backaction on their coupled spin results in spin torques and anisotropic spin relaxation which do not follow from standard spin-current considerations. We demonstrate the detection of the impurity spin by charge transport and its manipulation by electric fields.
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000019916 7001_ $$0P:(DE-Juel1)VDB104714$$aHell, M.$$b1$$uFZJ
000019916 7001_ $$0P:(DE-HGF)0$$aDas, S.$$b2
000019916 7001_ $$0P:(DE-Juel1)131026$$aWegewijs, M.R.$$b3$$uFZJ
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000019916 8567_ $$uhttp://dx.doi.org/10.1103/PhysRevLett.107.087202
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