Dynamical Coupling Between Ferromagnets Due to Spin Transfer Torque

Details Dynamical Coupling Between Ferromagnets Due to Spin Transfer Torque Dynamical Coupling Between Ferromagnets Due to Spin Transfer Torque

2008-02-12

arxiv.org/abs/0802.1560v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

We use a combination of analytic calculations and numerical simulations to demonstrate that electrical current flowing through a magnetic bilayer induces dynamical coupling between the layers. The coupling originates from the dependence of the spin transfer torque exerted on the layers on the relative orientations of their magnetic moments. We demonstrate that such coupling modifies the behaviors of both layers, significantly affecting the the stability of the current-induced dynamical regimes and the efficiency of current-induced magnetic reversal.

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