Fermi-Bose quantum degenerate ^40 K - ^87 Rb mixture with attractive interaction

Preprint

1 May 2002

preprint
Published by arXiv in arXiv

Abstract

We report on the achievement of symultaneous 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

ATTRACTIVE INTERACTION
QUANTUM DEGENERATE
BOSE QUANTUM
INTERACTION
FERMI BOSE
RB MIXTURE

All Related Versions

Version 1, 2002-05-01, ArXiv
Version 2, 2002-08-07, ArXiv
Published version: Physical Review Letters, 89 (15), 150403.

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