Finite temperature phase diagram of trapped Fermi gases with population imbalance
arXiv:0706.1253 · doi:10.1103/PhysRevA.76.042710
Abstract
We consider a trapped Fermi gas with population imbalance at finite temperatures and map out the detailed phase diagram across a wide Feshbach resonance. We take the Larkin-Ovchinnikov-Fulde-Ferrel (LOFF) state into consideration and minimize the thermodynamical potential to ensure stability. Under the local density approximation, we conclude that a stable LOFF state is present only on the BCS side of the Feshbach resonance, but not on the BEC side or at unitarity. Furthermore, even on the BCS side, a LOFF state is restricted at low temperatures and in a small region of the trap, which makes a direct observation of LOFF state a challenging task.
9 pages, 7 figures
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Cited by in corpus (7)
- Superfluidity at the BEC-BCS crossover in two-dimensional Fermi gases with population and mass imbalance
- Quantum phase diagram of fermion mixtures with population imbalance in one-dimensional optical lattices
- Phase separation in imbalanced fermion superfluids beyond mean-field
- Resonant enhancement of the FFLO-state in 3D by a one-dimensional optical potential
- Temperature Effects in a Fermi Gas with Population Imbalance
- Suppression or enhancement of the Fulde-Ferrell-Larkin-Ovchinnikov order in a one-dimensional optical lattice with particle correlated tunnelling
- Pair condensation of polarized fermions in the BCS-BEC crossover