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  • Title: Magnetization dynamics due to pure spin currents in magnetic double layers.
    Author: Woltersdorf G, Mosendz O, Heinrich B, Back CH.
    Journal: Phys Rev Lett; 2007 Dec 14; 99(24):246603. PubMed ID: 18233469.
    Abstract:
    The magnetization dynamics in magnetic double layers is affected by spin-pump and spin-sink effects. So far, only the spin pumping and its effect on the magnetic damping has been studied. However, due to conservation of angular momentum this spin current also leads to magnetic excitation of the layer dissipating this angular momentum. In this Letter we use time resolved magneto-optic Kerr effect to directly show the excitation due to the pure spin current. In particular, we observe magnetization dynamics due to transfer of angular momentum in magnetic double layers. In contrast to other experiments where a spin polarized charge current is passed through a nanomagnet, the effects discussed in this Letter are based on pure spin currents without net transfer of electric charge.
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