Feshbach resonances, molecular bound states, and prospects of ultracold-molecule formation in mixtures of ultracold K and Cs

Patel, H.J.; Blackley, C.L.; Cornish, S.L.; Hutson, J.M.

Abstract

We consider the possibilities for producing ultracold mixtures of K and Cs and forming KCs molecules by magnetoassociation. We carry out coupled-channel calculations of the interspecies scattering length for KCs39, KCs41, and KCs40 and characterize Feshbach resonances due to s-wave and d-wave bound states, with widths ranging from below 1 nG to 5 G. We also calculate the corresponding bound-state energies as a function of magnetic field. We give a general discussion of the combinations of intraspecies and interspecies scattering lengths needed to form low-temperature atomic mixtures and condensates and identify promising strategies for cooling and molecule formation for all three isotopic combinations of K and Cs.

Citation

Patel, H., Blackley, C., Cornish, S., & Hutson, J. (2014). Feshbach resonances, molecular bound states, and prospects of ultracold-molecule formation in mixtures of ultracold K and Cs. Physical Review A, 90(3), Article 032716. https://doi.org/10.1103/physreva.90.032716

• Journal Article Type: Article
• Publication Date: Sep 25, 2014
• Deposit Date: Oct 23, 2014
• Publicly Available Date: Nov 13, 2014
• Journal: Physical Review A
• Print ISSN: 1050-2947
• Electronic ISSN: 1094-1622
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 90
• Issue: 3
• Article Number: 032716
• DOI: https://doi.org/10.1103/physreva.90.032716
• Related Public URLs: http://uk.arxiv.org/abs/1409.1099