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29 March 2024
 
  » arxiv » cond-mat/0401109

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Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
M. Bartenstein ; A. Altmeyer ; S. Riedl ; S. Jochim ; C. Chin ; J. Hecker Denschlag ; R. Grimm ;
Date 8 Dec 2003
Journal Physical Review Letter 92, 120401 (2004) DOI: 10.1103/PhysRevLett.92.120401
Subject Other | cond-mat.other
AbstractWe demonstrate a reversible conversion of a Li2 molecular Bose-Einstein condensate to a degenerate Fermi gas of atoms by adiabatically crossing a Feshbach resonance. By optical in situ imaging, we observe a smooth change of the cloud size in the crossover regime. On the Feshbach resonance, the ensemble is strongly interacting and the measured cloud size is 75(7)% of the one of a non-interacting zero-temperature Fermi gas. The high condensate fraction of more than 90% and the adiabatic crossover suggest our Fermi gas to be cold enough to form a superfluid.
Source arXiv, cond-mat/0401109
Other source [GID 272768] pmid15089653
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