Observation of interspecies Feshbach resonances in an ultracold 39K-133Cs mixture and refinement of interaction potentials
Gröbner, M.; Weinmann, P.; Kirilov, E.; Nägerl, H.-C.; Julienne, P.S.; Le Sueur, C.R.; Hutson, J.M.
C.R. Le Sueur
Professor Jeremy Hutson firstname.lastname@example.org
We observe interspecies Feshbach resonances due to s-wave bound states in ultracold 39K -133Cs scattering for three different spin mixtures. The resonances are observed as joint atom loss and heating of the K sample. We perform least-squares fits to obtain improved K-Cs interaction potentials that reproduce the observed resonances, and carry out coupled-channel calculations to characterize the scattering and bound-state properties for 39K-Cs, 40K-Cs, and 41K-Cs. Our results open up the possibilities of tuning interactions in K-Cs atomic mixtures and of producing ultracold KCs molecules.
Gröbner, M., Weinmann, P., Kirilov, E., Nägerl, H., Julienne, P., Le Sueur, C., & Hutson, J. (2017). Observation of interspecies Feshbach resonances in an ultracold 39K-133Cs mixture and refinement of interaction potentials. Physical Review A, 95(2), Article 022715. https://doi.org/10.1103/physreva.95.022715
|Journal Article Type||Article|
|Acceptance Date||Feb 7, 2017|
|Online Publication Date||Feb 28, 2017|
|Publication Date||Feb 28, 2017|
|Deposit Date||Mar 1, 2017|
|Publicly Available Date||Mar 3, 2017|
|Journal||Physical Review A|
|Publisher||American Physical Society|
|Peer Reviewed||Peer Reviewed|
Published Journal Article
Reprinted with permission from the American Physical Society: Physical Review A 95, 022715 © (2017) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
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