Magnetic control of the interaction in ultracold K-Rb mixtures

Details Magnetic control of the interaction in ultracold K-Rb mixtures Magnetic control of the interaction in ultracold K-Rb mixtures

2003-01-10

arxiv.org/abs/cond-mat/0301159v1

Phys.Rev.Lett 90,163202 (2003)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.163202

We predict the presence of several magnetic Feshbach resonances in selected Zeeman sublevels of the isotopic pairs K(40)-Rb(87) and K(41)-Rb(87) at magnetic fields up to 1000 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 mixtures from the weak to the strong interacting regime tuning the applied field should allow to achieve the optimal conditions for boson-induced Cooper pairing in a multi component K(40)-Rb(87) atomic gas and for the production of ultracold polar molecules.

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