Exploring an ultracold fermi-fermi mixture: Interspecies Feshbach resonances and scattering properties of Li-6 and K-40

Year: 2008

Authors: Wille E., Spiegelhalder F.M., Kerner G., Naik D., Trenkwalder A., Hendl G., Schreck F., Grimm R., Tiecke T.G., Walraven J.T.M., Kokkelmans S.J.J.M.F., Tiesinga E., Julienne P.S.

Autors Affiliation: Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria; Institut für Experimentalphysik und Forschungszentrum für Quantenphysik, Universität Innsbruck, 6020 Innsbruck, Austria; Van der Waals-Zeeman Institute, University of Amsterdam, 1018 XE, The Netherlands; Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland, Gaithersburg, Maryland 20899-8423, USA

Abstract: We report on the observation of Feshbach resonances in an ultracold mixture of two fermionic species, Li-6 and K-40. The experimental data are interpreted using a simple asymptotic bound state model and full coupled channels calculations. This unambiguously assigns the observed resonances in terms of various s- and p-wave molecular states and fully characterizes the ground-state scattering properties in any combination of spin states.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 100 (5)      Pages from: 053201  to: 053201

KeyWords: ultracold atoms; Fermi Fermi mixtures; Feshback resonances
DOI: 10.1103/PhysRevLett.100.053201

Citations: 253
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