Control of the interaction in a Fermi-Bose mixture

Details Control of the interaction in a Fermi-Bose mixture Control of the interaction in a Fermi-Bose mixture

2006-06-29

arxiv.org/abs/cond-mat/0606757v2

PRA 74, 041605(R) (2006)

Physics

Condensed Matter

Other Condensed Matter

5 Pages

Scientific paper

10.1103/PhysRevA.74.041605

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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