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arXiv · 1102.2614

Orbital magnetic moment and extrinsic spin Hall effect for iron impurity in gold

Alexander B. Shick·Jindrich Kolorenc·Vaclav Janis·Alexander I. Lichtenstein
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Abstract

We report electronic structure calculations of an iron impurity in gold host. The spin, orbital and dipole magnetic moments were investigated using the LDA+$U$ correlated band theory. We show that the {\em around-mean-field}-LDA+$U$ reproduces the XMCD experimental data well and does not lead to formation of a large orbital moment on the Fe atom. Furthermore, exact diagonalization of the multi-orbital Anderson impurity model with the full Coulomb interaction matrix and the spin-orbit coupling is performed in order to estimate the spin Hall angle. The obtained value $\gamma_S \approx 0.025$ suggests that there is no giant extrinsic spin Hall effect due to scattering on iron impurities in gold.

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Alexander B. Shick, Jindrich Kolorenc, Vaclav Janis, Alexander I. Lichtenstein. 2011-02-13. Orbital magnetic moment and extrinsic spin Hall effect for iron impurity in gold. https://doi.org/10.1103/physrevb.84.113112

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