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    Inhomogeneous Gilbert damping from impurities and electron-electron interactions

    Hankiewicz, E. M.
    Vignale, Giovanni, 1957-
    Tserkovnyak, Yaroslav
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    [PDF] InhomogeneousGilbertDampingImpurities.pdf (110.8Kb)
    Date
    2008
    Format
    Article
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    Abstract
    We present a unified theory of magnetic damping in itinerant electron ferromagnets at order q2 including electron-electron interactions and disorder scattering. We show that the Gilbert damping coefficient can be expressed in terms of the spin conductivity, leading to a Matthiessen-type formula in which disorder and interaction contributions are additive. In a weak ferromagnet regime, electron-electron interactions lead to a strong enhancement of the Gilbert damping.
    URI
    http://hdl.handle.net/10355/7681
    Citation
    Phys. Rev. B 78, 020404(R) (2008) [4 pages]
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