We report on the detailed study of multicomponent spin waves in an s=3/2 Fermi gas where the high spin leads to novel tensorial degrees of freedom compared to s=1/2 systems. The excitations of a spin-nematic state are investigated from the linear to the nonlinear regime, where the tensorial character is particularly pronounced. By tuning the initial state we engineer the tensorial spin-wave character, such that the magnitude and the sign of the counterflow spin currents are effectively controlled. A comparison of our data with numerical and analytical results shows good agreement. © 2013 American Physical Society.
CITATION STYLE
Heinze, J., Krauser, J. S., Fläschner, N., Sengstock, K., Becker, C., Ebling, U., … Lewenstein, M. (2013). Engineering spin waves in a high-spin ultracold fermi gas. Physical Review Letters, 110(25). https://doi.org/10.1103/PhysRevLett.110.250402
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