Mosendz, O. and Woltersdorf, G. and Kardasz, B. and Heinrich, B. and Back, C. H. (2009) Magnetization dynamics in the presence of pure spin currents in magnetic single and double layers in spin ballistic and diffusive regimes. PHYSICAL REVIEW B, 79 (22): 224412. ISSN 1098-0121,
Full text not available from this repository.Abstract
In this paper we study the spin transport by using the spin-pumping effect in epitaxial magnetic single and double layer film structures. For the magnetic single layer sample we show the spin-pumping-induced interface damping increases and saturates with the Au capping layer thickness. In addition magnetic double layer structures allowed us to investigate both the spin-pump and spin-sink effects. Coupling of pure spin currents to the magnetization via spin-sink effect is studied using time-resolved magneto-optical Kerr effect. These measurements were used to study the propagation of pure spin currents across a Au spacer layer between the two ferromagnets. The propagation of spin momentum density through the Au spacer layer was well described by spin-diffusion equation, which takes into account electron momentum and spin-flip scattering. The spin-diffusion theory was integrated into modified Landau-Lifshitz equations accounting in self-consistent manner for spin-pump/sink mechanism and spin momentum density propagation. Good agreement between theory and experimental data was found.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FILMS; MULTILAYERS; INJECTION; VALVES; ballistic transport; ferromagnetic materials; gold; iron; Kerr magneto-optical effect; magnetic epitaxial layers; magnetisation; spin dynamics; spin polarised transport |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Sep 2020 13:05 |
| Last Modified: | 14 Sep 2020 13:05 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28921 |
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