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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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Abstract

We report Bose-Einstein condensation of weakly bound $^6$Li$_2$molecules in a crossed optical trap near a Feshbach resonance. We measure a molecule-molecule scattering length of$170^{+100}_{-60}$ nm at 770 G, in good agreement with theory.We study the expansion of the cloud in the BEC-BCS crossoverregion.

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T. Bourdel, L. Khaykovich, J Cubizolles, J. Zhang, F. Chevy, M. Teichmann, L. Tarruell, S. J. J. M. F. Kokkelmans, C. Salomon. 2004-04-02. Experimental Study of the BEC-BCS Crossover Region in Lithium 6. https://doi.org/10.1103/physrevlett.93.050401

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