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arXiv · 1111.1219

Tunable magnetization relaxation in spin valves

Xuhui Wang·Aurelien Manchon
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Abstract

In spin values the damping parameters of the free layer are determined non-locally by the entire magnetic configuration. In a dual spin valve structure that comprises a free layer embedded between two pinned layers, the spin pumping mechanism, in combination with the angular momentum conservation, renders the tensor-like damping parameters tunable by varying the interfacial and diffusive properties. Simulations based on the Landau-Lifshitz-Gilbert phenomenology for a macrospin model are performed with the tensor-like damping and the relaxation time of the free layer magnetization is found to be largely dependent on while tunable through the magnetic configuration of the source-drain magnetization.

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Xuhui Wang, Aurelien Manchon. 2011-11-04. Tunable magnetization relaxation in spin valves. https://arxiv.org/abs/1111.1219

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