Snell's Law for Spin Waves.

@article{Stigloher2016SnellsLF,
  title={Snell's Law for Spin Waves.},
  author={J Stigloher and Martin Decker and Helmut S K{\"o}rner and Kenji Tanabe and Takahiro Moriyama and Takashi Taniguchi and Hiroyuki Hata and M. Madami and G. Gubbiotti and Kazuyuki Kobayashi and Teruo Ono and C. H. Back},
  journal={Physical review letters},
  year={2016},
  volume={117 3},
  pages={037204}
}
We report the experimental observation of Snell's law for magnetostatic spin waves in thin ferromagnetic Permalloy films by imaging incident, refracted, and reflected waves. We use a thickness step as the interface between two media with different dispersion relations. Since the dispersion relation for magnetostatic waves in thin ferromagnetic films is anisotropic, deviations from the isotropic Snell's law known in optics are observed for incidence angles larger than 25° with respect to the… CONTINUE READING
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