Exploring Exotic Superfluidity of Polarized Ultracold Fermions in Optical Lattices
arXiv:0710.5484
Abstract
We explore theoretically the novel superfluidity of harmonically-trapped polarized ultracold fermionic atoms in a two-dimensional (2D) optical lattice by solving the Bogoliubov-de Gennes equations. The pairing amplitude is found to oscillate along the radial direction at low particle density and along the angular direction at high density. The former is consistent with the existing experiments and the latter is a newly predicted Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, which can be tested in experiments.
arXiv comment5 pages, 4 figures
References in corpus (17)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Pairing and Phase Separation in a Polarized Fermi Gas
- Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
- Inhomogeneous Superconductivity in Condensed Matter and QCD
- Fermionic atoms in a 3D optical lattice: Observing Fermi-surfaces, dynamics and interactions
- Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
- Deformation of a Trapped Fermi Gas with Unequal Spin Populations
- Attractive Fermi gases with unequal spin populations in highly elongated traps
- Phase diagram of a strongly interacting polarized Fermi gas in one dimension
- Strongly interacting Fermi gases with density imbalance
- Two-species fermion mixtures with population imbalance
- Trapped fermions with density imbalance in the BEC limit
- Sarma Phase in Trapped Unbalanced Fermi Gases
- Surface Tension in Unitary Fermi Gases with Population Imbalance
- Vortex Charges in High Temperature Superconductors
- Local tunneling spectroscopy as signatures of the Fulde-Ferrell-Larkin-Ovchinnikov state in s- and d-wave Superconductors
- Phase diagram of a polarized Fermi gas across a Feshbach resonance in a potential trap