Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
Other Condensed Matter
2007-05-23 v2
Abstract
We 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.
Keywords
Cite
@article{arxiv.cond-mat/0401109,
title = {Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas},
author = {M. Bartenstein and A. Altmeyer and S. Riedl and S. Jochim and C. Chin and J. Hecker Denschlag and R. Grimm},
journal= {arXiv preprint arXiv:cond-mat/0401109},
year = {2007}
}
Comments
5 pages, 4 figures, accepted by PRL