期刊
PHYSICAL REVIEW A
卷 95, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.95.022715
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资金
- European Research Council (ERC) [278417]
- Austrian Science Foundation (FWF) (Austrian-French FWF-ANR) [I1789- N20, P29602- N36]
- UK Engineering and Physical Sciences Research Council [EP/N007085/1]
- Engineering and Physical Sciences Research Council [EP/N007085/1] Funding Source: researchfish
- EPSRC [EP/N007085/1] Funding Source: UKRI
We observe interspecies Feshbach resonances due to s-wave bound states in ultracold K-39-Cs-133 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 K-39-Cs, K-40-Cs, and K-41-Cs. Our results open up the possibilities of tuning interactions in K-Cs atomic mixtures and of producing ultracold KCs molecules.
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