Spin polarizability of a trapped superfluid Fermi gas

Abstract

The polarization produced by the relative displacement of the potentials trapping two spin species of a dilute Fermi gas with $N_\ua=N_\da$ is calculated at unitarity by assuming phase separation between the superfluid and a spin polarized phase at zero temperature. Due to the energy cost associated with pair breaking, the dipole magnetic polarizability vanishes in the linear limit and exhibits important deviations from the ideal gas behaviour even for displacements of the order of the size of the atomic cloud. The magnetic behaviour in the presence of different trapping frequencies for the two spin species is also discussed.

References in corpus (6)

• Strongly interacting Fermi gases with density imbalance
• Profiles of near-resonant population-imbalanced trapped Fermi gases
• Trapped fermions with density imbalance in the BEC limit
• Trapped Fermions across a Feshbach resonance with population imbalance
• Surface Tension in Unitary Fermi Gases with Population Imbalance
• Bragg scattering and the spin structure factor of two-component atomic gases

Cited by in corpus (6)

• Many-Body Physics with Ultracold Gases
• Efficient numerical methods for computing ground states and dynamics of dipolar Bose-Einstein condensates
• Structure and dynamics of a rotating superfluid Bose-Fermi mixture
• Oscillatory pairing of fermions in spin-split traps
• Phase separation in optical lattices in a spin-dependent external potential
• Probing ultracold Fermi gases with light-induced gauge potentials