Feshbach resonances in an ultracold $^7$Li and $^{87}$Rb mixture - Condensed Matter > Other Condensed MatterReportar como inadecuado




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Abstract: We report on the observation of five Feshbach resonances in collisionsbetween ultracold $^7$Li and $^{87}$Rb atoms in the absolute ground statemixture where both species are in their $|f,m f>=|1,1>$ hyperfine states. Theresonances appear as trap losses for the $^7$Li cloud induced by inelasticheteronuclear three-body collisions. The magnetic field values where they occurare important quantities for an accurate determination of the interspeciesinteraction potentials. Results of coupled channels calculations based on theobserved resonances are presented and refined potential parameters are given. Avery broad Feshbach resonance centered around 649 G should allow for finetuning of the interaction strength in future experiments.



Autor: C. Marzok, B. Deh, C. Zimmermann, Ph. W. Courteille, E. Tiemann, Y. V. Vanne, A. Saenz

Fuente: https://arxiv.org/







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