Quasiperiodicity, bistability and chaos in the Landau-Lifshitz equation

Details Quasiperiodicity, bistability and chaos in the Landau-Lifshitz equation Quasiperiodicity, bistability and chaos in the Landau-Lifshitz equation

1999-05-04

arxiv.org/abs/cond-mat/9905034v1

Physics

Condensed Matter

Materials Science

4 pages, 5 figures

Scientific paper

The dynamics of an individual magnetic moment is studied through the Landau-Lifshitz equation with a periodic driving in the direction perpendicular to the applied field. For fields lower than the anisotropy field and small values of the perturbation amplitude we have observed the magnetic moment bistability. At intermediate values we have found quasiperiodic bands alternating with periodic motion. At even larger values a chaotic regime is found. When the applied field is larger than the anisotropy one, the behavior is periodic with quasiperiodic regions. Those appear periodically in the amplitude of the oscillating field. Also, even for low values of the driving force, the moment is not parallel to the applied field.

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