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

Alexander B. Shick, Jindřich Kolorenč, Václav Janiš, and Alexander I. Lichtenstein
Phys. Rev. B 84, 113112 – Published 28 September 2011

Abstract

We report electronic structure calculations of an iron impurity in a gold host. The spin, orbital, and dipole magnetic moments were investigated using the local density approximation (LDA) + U correlated band theory. We show that the around-mean-field LDA + U reproduces the x-ray magnetic circular dichroism (XMCD) experimental data well and does not lead to the formation of a large orbital moment on the Fe atom. Furthermore, exact diagonalization of the multiorbital 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 γS0.025 suggests that there is no giant extrinsic spin Hall effect due to scattering on iron impurities in gold.

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  • Received 9 August 2011

DOI:https://doi.org/10.1103/PhysRevB.84.113112

©2011 American Physical Society

Authors & Affiliations

Alexander B. Shick1, Jindřich Kolorenč2,1, Václav Janiš1, and Alexander I. Lichtenstein2

  • 1Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-182 21 Prague, Czech Republic
  • 2Institute of Theoretical Physics, University of Hamburg, Jungiusstraße 9, D-20355 Hamburg, Germany

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Issue

Vol. 84, Iss. 11 — 15 September 2011

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