Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.250402
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Funding
- DFG [FOR801]
- Spanish MICINN [FIS 2008-00784]
- ERC
- Spanish foundation universidad.es.
- ICREA Funding Source: Custom
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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.
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