Experimental study of the BEC-BCS crossover region in lithium 6

T. Bourdel, L. Khaykovich, J. Cubizolles, J. Zhang, F. Chevy, M. Teichmann, L. Tarruell, S.J.J.M.F. Kokkelmans, C. Salomon

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We report Bose-Einstein condensation of weakly bound /sup 6/Li/sub 2/ molecules in a crossed optical trap near a Feshbach resonance. We measure a molecule-molecule scattering length of 170/sub -60//sup +100/ nm at 770 G, in good agreement with theory. We study the 2D expansion of the cloud and show deviation from hydrodynamic behavior in the BEC-BCS crossover region
Original languageEnglish
Article number050401
Pages (from-to)050401-1/4
Number of pages4
JournalPhysical Review Letters
Issue number5
Publication statusPublished - 2004


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