Simulation of current-induced microwave oscillation in geometrically confined domain wall

Details Simulation of current-induced microwave oscillation in geometrically confined domain wall Simulation of current-induced microwave oscillation in geometrically confined domain wall

2009-03-06

arxiv.org/abs/0903.1151v1

J. Appl. Phys. 105, 07D525 (2009);

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 3 figures

Scientific paper

10.1063/1.3075555

We studied magnetization dynamics of a geometrically confined domain wall under dc current by solving simultaneously the Landau-Lifshitz-Gilbert equation and diffusion equation for spin accumulation. We showed that the oscillation motion of the domain wall is driven by the spin-transfer torque and the dc current is converted to the ac voltage signal. The results means that the geometrically confined domain wall is applicable as a source of microwave oscillator.

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