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    Spin Dynamics from Time-Dependent Spin-Density-Functional Theory

    Qian, Zhixin
    Vignale, Giovanni, 1957-
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    [PDF] SpinDynamicsFromTimeDependent.pdf (88.89Kb)
    Date
    2002-01
    Format
    Article
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    Abstract
    We derive the spin-wave dynamics of a magnetic material from the time-dependent spin-density-functional theory in the linear response regime. The equation of motion for the magnetization includes, besides the static spin stiffness, a “Berry curvature” correction and a damping term. A gradient expansion scheme based on the homogeneous spin-polarized electron gas is proposed for the latter two quantities, and the first few coefficients of the expansion are calculated to second order in the Coulomb interaction.
    URI
    http://hdl.handle.net/10355/7912
    Part of
    Physics and Astronomy publications
    Citation
    Phys. Rev. Lett. 88, 056404 (2002)
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