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arXiv · cond-mat/0606757

Control of the interaction in a Fermi-Bose mixture

M. Zaccanti·C. D'Errico·F. Ferlaino·G. Roati·M. Inguscio·G. Modugno
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Abstract

We control the interspecies interaction in a two-species atomic quantum mixture by tuning the magnetic field at a Feshbach resonance. The mixture is composed by fermionic 40K and bosonic 87Rb. We observe effects of the large attractive and repulsive interaction energy across the resonance, such as collapse or a reduced spatial overlap of the mixture, and we accurately locate the resonance position and width. Understanding and controlling instabilities in this mixture opens the way to a variety of applications, including formation of heteronuclear molecular quantum gases.

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M. Zaccanti, C. D'Errico, F. Ferlaino, G. Roati, M. Inguscio, G. Modugno. 2006-10-31. Control of the interaction in a Fermi-Bose mixture. https://doi.org/10.1103/physreva.74.041605

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