Fermi-Bose Quantum Degenerate K-40- R-87b Mixture with Attractive Interaction
- G. Roati(,)
- Unlisted and
- Florence U. and
- INFM, Florence
- F. Riboli(,)
- Unlisted and
- Florence U. and
- INFM, Florence
- G. Modugno(,)
- Unlisted and
- Florence U. and
- INFM, Florence
- M. Inguscio()
- Unlisted and
- Florence U. and
- INFM, Florence
4 pages
Published in:
- Phys.Rev.Lett. 89 (2002) 150403
e-Print:
- cond-mat/0205015 [cond-mat.soft]
View in:
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Abstract: (APS)
We report on the achievement of simultaneous quantum degeneracy in a mixed gas of fermionic K40 and bosonic R87b. 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 from the magnetic trap, where it is immersed in the Fermi sea.Note:
- 5 pages, 4 figures, replaced one figure plus some changes
- 05.30.Jp
- 05.30.Fk
- 32.80.Pj
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