Understanding the superfluid phase diagram in trapped Fermi gases

Abstract

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 ${}^{40}$K 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 ${}^{40}$K data to a theoretically computed phase diagram demonstrates good agreement between the two.

4 pages, 3 figures, submitted to PRA Rapid

References in corpus (5)

• Vortices and Superfluidity in a Strongly Interacting Fermi Gas
• Observation of Bose-Einstein Condensation of Molecules
• Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
• Collective excitations of a degenerate gas at the BEC-BCS crossover
• Extracting the condensate density from projection experiments with Fermi gases

Cited by in corpus (19)

• Many-Body Physics with Ultracold Gases
• Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
• Fermion Interactions and Universal Behavior in Strongly Interacting Theories
• The unitary gas in an isotropic harmonic trap: symmetry properties and applications
• Thermodynamic Measurements in a Strongly Interacting Fermi Gas
• Universal equation of state and pseudogap in the two-dimensional Fermi gas
• Kibble-Zurek universality in a strongly interacting Fermi superfluid
• Critical Temperature and Condensate Fraction of a Fermion Pair Condensate
• Thermodynamics and superfluid density in BCS-BEC crossover with and without population imbalance
• Comparison of Different Pairing Fluctuation Approaches to BCS-BEC Crossover
• Pseudogap phenomena in ultracold atomic Fermi gases
• Coqblin-Schrieffer Model for an Ultra-cold Gas of Ytterbium atoms with Metastable States
• A Model for Overscreened Kondo Effect in Ultracold Fermi Gas
• Correlations in the low-density Fermi gas: Fermi-Liquid state, Dimerization, and BCS Pairing
• Thermodynamical approaches to efficient sympathetic cooling in ultracold Fermi-Bose atomic mixtures
• Experimental realization of BCS-BEC crossover physics with a Fermi gas of atoms
• Adiabatic Phase Diagram of an Ultracold Atomic Fermi Gas with a Feshbach Resonance
• The impact of speckle disorder on a superfluid Fermi system
• Superfluidity in atomic Fermi gases