Breaking of Galilean Invariance in the Hydrodynamic Formulation of Ferromagnetic Thin Films.

  title={Breaking of Galilean Invariance in the Hydrodynamic Formulation of Ferromagnetic Thin Films.},
  author={Ezio Iacocca and Thomas J. Silva and Mark A. Hoefer},
  journal={Physical review letters},
  volume={118 1},
Microwave magnetodynamics in ferromagnets are often studied in the small-amplitude or weakly nonlinear regime corresponding to modulations of a well-defined magnetic state. However, strongly nonlinear regimes, where the aforementioned approximations are not applicable, have become experimentally accessible. By reinterpreting the governing Landau-Lifshitz equation of motion, we derive an exact set of equations of dispersive hydrodynamic form that are amenable to analytical study even when full… 

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