%0 Journal Article
%A Baumgärtel, M.
%A Hell, M.
%A Das, S.
%A Wegewijs, M.R.
%T Transport and accumulation of spin anisotropy
%J Physical review letters
%V 107
%@ 0031-9007
%C College Park, Md.
%I APS
%M PreJuSER-19916
%P 087202
%D 2011
%Z We acknowledge stimulating discussions with B. Sothmann, J. Konig, and S. Andergassen. and the financial support from NanoSci-ERA and DFG (FOR 912).
%X 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.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000293921000023
%R 10.1103/PhysRevLett.107.087202
%U https://juser.fz-juelich.de/record/19916