Magnetic control of the interaction in ultracold K-Rb mixtures

Year: 2003

Authors: Simoni A., Ferlaino F., Roati G., Modugno G., Inguscio M.

Autors Affiliation: Univ Perugia, INFM, I-06123 Perugia, Italy; Univ Perugia, Dept Chem, I-06123 Perugia, Italy; Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy; Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy; INFM, I-50019 Sesto Fiorentino, Italy.

Abstract: We predict the presence of several magnetic Feshbach resonances in selected Zeeman sublevels of K-40-Rb-87 and K-41-Rb-87 at magnetic fields up to 10(3) G. Positions and widths are determined combining a new measurement of the K-40-Rb-87 inelastic cross section with recent experimental results on both isotopes. The possibility of driving a K-Rb mixture from the weak to the strong interacting regime tuning the applied field should allow one to achieve the optimal conditions for boson-induced Cooper pairing in a multicomponent K-40-Rb-87 atomic gas and for the production of ultracold polar molecules.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 90 (16)      Pages from: 163202-1  to: 163202-4

KeyWords: Bose-einstein Condensation; Collapse
DOI: 10.1103/PhysRevLett.90.163202

Citations: 113
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