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

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    0367154 - FZU-D 2012 RIV US eng J - Journal Article
    Shick, Alexander - Kolorenč, Jindřich - Janiš, Václav - Lichtenstein, A.I.
    Orbital magnetic moment and extrinsic spin Hall effect for iron impurities in gold.
    Physical Review. B. Roč. 84, č. 11 (2011), "113112-1"-"113112-4". ISSN 1098-0121
    R&D Projects: GA ČR(CZ) GAP204/10/0330; GA AV ČR IAA100100912
    Institutional research plan: CEZ:AV0Z10100520
    Keywords : spin Hall effect * XMCD
    Subject RIV: BM - Solid Matter Physics ; Magnetism
    Impact factor: 3.691, year: 2011
    http://prb.aps.org/abstract/PRB/v84/i11/e113112

    We report electronic structure calculations of an iron impurity in a gold host. The spin, orbital, and dipole magnetic moments were investigated using the LDA+U correlated band theory. We show that the around-mean-field LDA+U reproduces the x-ray magnetic circular dichroism experiments 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 calculations suggest that there is no giant extrinsic spin Hall effect due to scattering on iron impurities in gold.
    Permanent Link: http://hdl.handle.net/11104/0201921