Understanding the superfluid phase diagram in trapped Fermi gases

Qijin Chen, C. A. Regal, M. Greiner, D. S. Jin, K. Levin
2006 Physical Review A. Atomic, Molecular, and Optical Physics  
Trapped ultracold Fermi gases provide a system that can be tuned between the BCS and BEC regimes by means of a magnetic-field Feshbach resonance. Condensation of fermionic atom pairs in a ^40K gas was demonstrated experimentally by a sweep technique that pairwise projects fermionic atoms onto molecules. In this paper we examine previous data obtained with this technique that probed the phase boundary in the temperature-magnetic field plane. Comparison of the ^40K data to a theoretically
more » ... phase diagram demonstrates good agreement between the two.
doi:10.1103/physreva.73.041601 fatcat:ndtjxr2b6bgrhnr6xbef5mvgne