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Expansion of an ultra-cold lithium gas in the BEC-BCS crossover
Leticia Tarruell, Martin Teichmann, Jason Mckeever +7
We present an experimental study of the time of flight properties of a gas of ultra-cold fermions in the BEC-BCS crossover. Since interactions can be tuned by changing the value of…
Expansion of a lithium gas in the BEC-BCS crossover
J. Zhang, E. G. M. Van Kempen, T. Bourdel +7
We report on experiments in Li Fermi gases near Feshbach resonances. A broad s-wave resonance is used to form a Bose-Einstein condensate of weakly bound Li molecules in…
Experimental Study of the BEC-BCS Crossover Region in Lithium 6
T. Bourdel, L. Khaykovich, J Cubizolles +6
We report Bose-Einstein condensation of weakly bound Limolecules in a crossed optical trap near a Feshbach resonance. We measure a molecule-molecule scattering length of$17…
Measurement of interaction energy near a Feshbach resonance in a 6Li Fermi gas
T. Bourdel, J. Cubizolles, L. Khaykovich +4
We investigate the strongly interacting regime in an optically trapped Li Fermi mixture near a Feshbach resonance. The resonance is found at G in good agreement with…
A quasi-pure Bose-Einstein condensate immersed in a Fermi sea
F. Schreck, L. Khaykovich, K. L. Corwin +4
We report the observation of co-existing Bose-Einstein condensate and Fermi gas in a magnetic trap. With a very small fraction of thermal atoms, the 7Li condensate is quasi-pure an…