Spin-pumping size effect

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Resumo

The spatial distribution of magnetization oscillations of pure spin current induced in a thin layer of a non-magnetic conductor due to spin pumping is theoretically investigated. The influence of boundary conditions is studied. It is shown that if the oscillation frequency is lower than the spin relaxation frequency, the voltage at the surface of the conductor layer due to the inverse spin Hall effect is maximum when the layer thickness is close to the spin diffusion length.

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Sobre autores

N. Bebenin

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Autor responsável pela correspondência
Email: bebenin@imp.uran.ru
Rússia, Ekaterinburg, 620108

Bibliografia

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2. Fig. 1. Dependence of Mx(t = 0) on the z coordinate in the spin diffusion region for a nonmagnetic layer thickness of d=1.5 LD; the inset shows the curves for d=0.5 LD. Curves 1 are calculated for the case of a clean surface; curves 2 – for an absorbing surface; curve 3 – for the case of a half-space.

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3. Fig. 2. Dependence of Mx(t = 0) on the z coordinate in the region of the spin skin effect at a frequency of f = 1 GHz and τs=1.5 ps; the thickness of the nonmagnetic layer is d = 1.5 LD. The inset shows the curves for d = 0.5 LD. The notations are the same as in Fig. 1.

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4. Fig. 3. Dependence of the average magnetization current on the thickness of the non-magnetic metal layer. Curve 1 is the spin diffusion region, curve 2 is the spin skin effect region (frequency f = 1 GHz and τs=1.5 ps).

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