Abstract
We report on the detailed study of multicomponent spin waves in an Fermi gas where the high spin leads to novel tensorial degrees of freedom compared to 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.
- Received 18 February 2013
DOI:https://doi.org/10.1103/PhysRevLett.110.250402
© 2013 American Physical Society