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Tunable Feshbach resonances in collisions of ultracold molecules in 2Σ states with alkali-metal atoms [dataset] Open Access

We consider the magnetically tunable Feshbach resonances that may exist in ultracold mixtures of molecules in 2Σ states and alkali-metal atoms. We focus on Rb+CaF as a prototype system. There are likely to be Feshbach resonances analogous to those between pairs of alkali-metal atoms. We investigate the patterns of near-threshold states and the resonances that they cause, using coupled-channel calculations of the bound states and low-energy scattering on model interaction potentials. We explore the dependence of the properties on as-yet-unknown potential parameters. There is a high probability that resonances will exist at magnetic fields below 1000 G, and that these will be broad enough to control collisions and form triatomic molecules by magnetoassociation. We consider the effect of CaF rotation and potential anisotropy, and conclude that they may produce additional resonances but should not affect the existence of rotation-free resonances.

Descriptions

Resource type
Dataset
Contributors
Creator: Bird, Robert C. 1
Hutson, Jeremy M. 1
Tarbutt, Michael R. 2
1 Durham University
2 Imperial College London
Funder
Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword
Ultracold physics
Atomic physics
Chemical physics
Subject
Physics
Location
Language
Cited in
Identifier
ark:/32150/r16d56zw68r
doi:10.15128/r16d56zw68r
Rights
Creative Commons Attribution 4.0 International (CC BY)

Publisher
Durham University
Date Created
17/05/23

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R.C. Bird
Date Uploaded
Date Modified
18 May 2023, 08:05:14
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File format: zip (ZIP Format)
Mime type: application/zip
File size: 4294501
Last modified: 2023:05:17 15:00:15+01:00
Filename: Repository.zip
Original checksum: 0b05fdbd06c968abb098ef528b4b6f3b
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