Collective Spin Modes of a Trapped Quantum Ferrofluid.

@article{Lepoutre2018CollectiveSM,
  title={Collective Spin Modes of a Trapped Quantum Ferrofluid.},
  author={S. Lepoutre and L. Gabardos and K. Kechadi and P. Pedri and O. Gorceix and E. Marechal and L. Vernac and B. Laburthe-Tolra},
  journal={Physical review letters},
  year={2018},
  volume={121 1},
  pages={
          013201
        }
}
  • S. Lepoutre, L. Gabardos, +5 authors B. Laburthe-Tolra
  • Published 2018
  • Physics, Medicine
  • Physical review letters
  • We report on the observation of a collective spin mode in a spinor Bose-Einstein condensate. Initially, all spins point perpendicular to the external magnetic field. The lowest energy mode consists of a sinusoidal oscillation of the local spin around its original axis, with an oscillation amplitude that linearly depends on the spatial coordinates. The frequency of the oscillation is set by the zero-point kinetic energy of the BEC. The observations are in excellent agreement with hydrodynamic… CONTINUE READING

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