Sedlmayr N., Berakdar J.

We study the influence of the non-homogeneity of a magnetization field on the behaviour of interacting electrons in a quantumdot. In particular we investigate the magnetotransport properties when the dot is weakly coupled to two ferromagnetic leads. We take into account the interactions in the quantumdot non-perturbatively. For a magnetization which varies slowly on the scale of the Fermi wavelength, the non-homogeneity effect is described by a gauge potential that can be treated perturbatively.

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