First-principles study of magnetization relaxation enhancement and spin transfer in thin magnetic films

Zwierzycki, Maciej and Tserkovnyak, Yaroslav and Kelly, Paul J. and Brataas, Arne and Bauer, Gerrit E.W. (2005) First-principles study of magnetization relaxation enhancement and spin transfer in thin magnetic films. Physical Review B: Condensed matter and materials physics, 71 (6). 064420. ISSN 1098-0121

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Abstract:	The interface-induced magnetization damping of thin ferromagnetic films in contact with normal-metal layers is calculated from first principles for clean and disordered Fe/Au and Co/Cu interfaces. Interference effects arising from coherent scattering turn out to be very small, consistent with a very small magnetic coherence length. Because the mixing conductances which govern the spin transfer are to a good approximation real-valued, the spin pumping can be described by an increased Gilbert damping factor but an unmodified gyromagnetic ratio. The results also confirm that the spin-current-induced magnetization torque is an interface effect.
Item Type:	Article
Copyright:	© 2005 The American Physical Society
Faculty:	Science and Technology (TNW)
Research Group:	Computational Materials Science (CMS)
Link to this item:	http://purl.utwente.nl/publications/50267
Official URL:	http://dx.doi.org/10.1103/PhysRevB.71.064420
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Metis ID: 223664