Effect of Nonlocal Spin-Transfer Torque on Current-Induced Magnetization Dynamics

Details Effect of Nonlocal Spin-Transfer Torque on Current-Induced Magnetization Dynamics Effect of Nonlocal Spin-Transfer Torque on Current-Induced Magnetization Dynamics

2008-11-28

arxiv.org/abs/0811.4649v1

Physics

Condensed Matter

Other Condensed Matter

10 pages, 2 figures

Scientific paper

Using the self-consistent model, we present nonlocal spin-transfer effects caused by the feedback between inhomogeneous magnetization and spin-transfer torque on the current-induced magnetization dynamics in nanomagnets. The nonlocal effects can substantially improve the coherence time of precession in nanomagnets and thus reduce the linewidth of power spectrum. This narrow linewidth results from the nonlinear damping of spin-waves due to the nonlocal spin torque which is inherent and thus should be considered in future experiments.

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