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    Spin Currents and Spin Dynamics in Time-Dependent Density-Functional Theory

    Capelle, K.
    Vignale, Giovanni, 1957-
    Gyorffy, B. L.
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    [PDF] SpinCurrentsSpinDynamicsTime.pdf (85.83Kb)
    Date
    2001
    Format
    Article
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    Abstract
    We derive and analyze the equation of motion for the spin degrees of freedom within time-dependent spin-density-functional theory (TD-SDFT). The results are (i) a prescription for obtaining many-body corrections to the single-particle spin currents from the Kohn-Sham equation of TD-SDFT, (ii) the existence of an exchange-correlation (xc) torque within TD-SDFT, (iii) a prescription for calculating, from TD-SDFT, the torque exerted by spin currents on the spin magnetization, (iv) a novel exact constraint on approximate xc functionals, and (v) the discovery of serious deficiencies of popular approximations to TD-SDFT when applied to spin dynamics.
    URI
    http://hdl.handle.net/10355/7917
    Citation
    Phys. Rev. Lett. 87, 206403 (2001)
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