We report the observation of coexisting Bose-Einstein condensate (BEC) and Fermi gas in a magnetic trap. With a very small fraction of thermal atoms, the ⁷Li condensate is quasipure and in thermal contact with a ⁶Li Fermi gas. The lowest common temperature is 0.28μK0.2(1)TC0ex0ex=0ex0ex0.2(1)TF where TC is the BEC critical temperature and TF the Fermi temperature. The ⁷Li condensate has a one-dimensional character.
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Schreck et al. (2001) studied this question.
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