Abstract
We produce a Bose-Einstein condensate of atoms. Condensation of this species with a naturally small and negative scattering length is achieved by a combination of sympathetic cooling with and direct evaporation, exploiting the magnetic tuning of both inter- and intraspecies interactions at Feshbach resonances. We explore the tunability of the self-interactions by studying the expansion and the stability of the condensate. We find that a condensate is interesting for future experiments requiring a weakly-interacting Bose gas.
- Received 27 March 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.010403
©2007 American Physical Society