We produce a Bose-Einstein condensate of 39K atoms. Condensation of this species with a naturally small and negative scattering length is achieved by a combination of sympathetic cooling with 87Rb 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 39K condensate is interesting for future experiments requiring a weaklyinteracting Bose gas.

39K Bose-Einstein condensate with tunable interactions / Roati, G.; Zaccanti, Matteo; Derrico, C.; Catani, J.; Modugno, Michele; Simoni, A.; Inguscio, Massimo; Modugno, Giovanni. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 99:(2007), pp. 010403-010403.

39K Bose-Einstein condensate with tunable interactions

ZACCANTI, MATTEO;MODUGNO, MICHELE;INGUSCIO, MASSIMO;MODUGNO, GIOVANNI
2007

Abstract

We produce a Bose-Einstein condensate of 39K atoms. Condensation of this species with a naturally small and negative scattering length is achieved by a combination of sympathetic cooling with 87Rb 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 39K condensate is interesting for future experiments requiring a weaklyinteracting Bose gas.
2007
99
010403
010403
Roati, G.; Zaccanti, Matteo; Derrico, C.; Catani, J.; Modugno, Michele; Simoni, A.; Inguscio, Massimo; Modugno, Giovanni
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/213745
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