Control of the interaction in a Fermi-Bose mixture

Journal Article · Sun Oct 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.041605· OSTI ID:20857808

Zaccanti, M; D'Errico, C; Ferlaino, F; Roati, G; Inguscio, M; Modugno, G ^[1]

---

1. LENS and Dipartimento di Fisica, Universita di Firenze (Italy) and INFM-CNR, Via Nello Carrara 1, 50019 Sesto Fiorentino (Italy)

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 {sup 40}K and bosonic {sup 87}Rb. 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.

• OSTI ID: 20857808
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BOSONS
CONTROL
FERMIONS
INSTABILITY
MAGNETIC FIELDS
MIXTURES
POTASSIUM 40
RESONANCE
RUBIDIUM 87