Fermi-Bose quantum degenerate ^40 K - ^87 Rb mixture with attractive interaction
Soft Condensed Matter
2009-11-07 v2
Abstract
We report on the achievement of simultaneous quantum degeneracy in a mixed gas of fermionic ^40 K and bosonic ^87 Rb. Potassium is cooled to 0.3 times the Fermi temperature by means of an efficient thermalization with evaporatively cooled rubidium. Direct measurement of the collisional cross-section confirms a large interspecies attraction. This interaction is shown to affect the expansion of the Bose-Einstein condensate released form the magnetic trap, where it is immersed in the Fermi sea.
Keywords
Cite
@article{arxiv.cond-mat/0205015,
title = {Fermi-Bose quantum degenerate ^40 K - ^87 Rb mixture with attractive interaction},
author = {G. Roati and F. Riboli and G. Modugno and M. Inguscio},
journal= {arXiv preprint arXiv:cond-mat/0205015},
year = {2009}
}
Comments
5 pages, 4 figures, replaced one figure plus some changes