Destroying superfluidity by rotating a Fermi gas at unitarity
arXiv:0711.0653 · doi:10.1103/PhysRevLett.100.070401
Abstract
We study the effect of the rotation on a harmonically trapped Fermi gas at zero temperature under the assumption that vortices are not formed. We show that at unitarity the rotation produces a phase separation between a non rotating superfluid (S) core and a rigidly rotating normal (N) gas. The interface between the two phases is characterized by a density discontinuity , independent of the angular velocity. The depletion of the superfluid and the angular momentum of the rotating configuration are calculated as a function of the angular velocity. The conditions of stability are also discussed and the critical angular velocity for the onset of a spontaneous quadrupole deformation of the interface is evaluated.
5 pages, 4 figures; comments added; 2 figures changed according to new results; inset Fig.2 corrected; accepted for publication in Phys. Rev. Lett
References in corpus (20)
- Vortices and Superfluidity in a Strongly Interacting Fermi Gas
- Pairing and Phase Separation in a Polarized Fermi Gas
- Superfluid Fermi Gases with Large Scattering Length
- Equation of state of a Fermi gas in the BEC-BCS crossover: a quantum Monte Carlo study
- Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
- Stationary states of a rotating Bose-Einstein condensate: routes to vortex nucleation
- Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
- Measurement of the angular momentum of a rotating Bose-Einstein condensate
- Normal state of a polarized Fermi gas at unitarity
- Dynamic instability of a rotating Bose-Einstein condensate
- Overcritical Rotation of a Trapped Bose-Einstein Condensate
- Experimental studies of equilibrium vortex properties in a Bose-condensed gas
- Zero Temperature Thermodynamics of Asymmetric Fermi Gases at Unitarity
- Critical rotation of a harmonically trapped Bose gas
- Shape deformations and angular momentum transfer in trapped Bose-Einstein condensates
- Fermi Gases in Slowly Rotating Traps: Superfluid vs Collisional Hydrodynamics
- Formation of a vortex lattice in a rotating BCS Fermi gas
- Critical Rotational Frequency for Superfluid Fermionic Gases across a Feshbach Resonance
- Density waves and supersolidity in rapidly rotating atomic Fermi gases
- Breathing modes of a fast rotating Fermi gas
Cited by in corpus (16)
- The BCS-BEC crossover: From ultra-cold Fermi gases to nuclear systems
- Pairing Phase Transitions of Matter under Rotation
- Effective Nonlinear Schrödinger Equations for Cigar-Shaped and Disk-Shaped Fermi Superfluids at Unitarity
- Spin diffusion in Fermi gases
- The role of interactions in spin-polarised atomic Fermi gases at unitarity
- Pair-Breaking in Rotating Fermi Gases
- Density and spin response function of a normal Fermi gas at unitarity
- Rotation induced superfluid-normal phase separation in trapped Fermi gases
- Rotating Fermi gases in an anharmonic trap
- Vortex formation in a rotating two-component Fermi gas
- Unitary polarized Fermi gas under adiabatic rotation
- Finite temperature vortices in a rotating Fermi gas
- Rotating a Rashba-coupled Fermi gas in two dimensions
- Rotational properties of superfluid Fermi-Bose mixtures in a tight toroidal trap
- Interplay between Rashba spin-orbit coupling and adiabatic rotation in a two-dimensional Fermi gas
- Vortices in Fermi gases with spin-dependent rotation potentials