Observation of interspecies 6Li- 133Cs feshbach resonances

We report on the observation of 19 interspecies Feshbach resonances in an optically trapped ultracold Bose-Fermi mixture of 133Cs and 6Li in the two energetically lowest spin states. We assign the resonances to s- and p-wave molecular channels by a coupled-channels calculation, resulting in an accur...

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Main Authors: Repp, Marc (Author) , Pires, Rico (Author) , Ulmanis, Juris (Author) , Heck, Robert (Author) , Kuhnle, Eva (Author) , Weidemüller, Matthias (Author) , Tiemann, E. (Author)
Format: Article (Journal)
Language:English
Published: 3 January 2013
In: Physical review. A, Atomic, molecular, and optical physics
Year: 2013, Volume: 87, Issue: 1, Pages: 1-5
ISSN:1094-1622
DOI:10.1103/PhysRevA.87.010701
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.87.010701
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.87.010701
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Author Notes:M. Repp, R. Pires, J. Ulmanis, R. Heck, E.D. Kuhnle, and M. Weidemüller, E. Tiemann

MARC

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520 |a We report on the observation of 19 interspecies Feshbach resonances in an optically trapped ultracold Bose-Fermi mixture of 133Cs and 6Li in the two energetically lowest spin states. We assign the resonances to s- and p-wave molecular channels by a coupled-channels calculation, resulting in an accurate determination of LiCs ground-state potentials. Fits of the resonance position based on the undressed asymptotic bound state model do not provide the same level of accuracy as the coupled-channels calculation. Several broad s-wave resonances provide prospects to create fermionic LiCs molecules with a large dipole moment via Feshbach association followed by stimulated Raman passage. Two of the s-wave resonances overlap with a zero crossing of the Cs scattering length, which offers prospects for the investigation of polarons in an ultracold Li-Cs mixture. 
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