Journal
NEW JOURNAL OF PHYSICS
Volume 23, Issue 11, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1367-2630/ac3318
Keywords
Feshbach resonance; ultracold molecule; atom-molecule collision
Categories
Funding
- National Key R&D Program of China [2018YFA0306502]
- National Natural Science Foundation of China [11521063, 11904355]
- Chinese Academy of Sciences
- Anhui Initiative in Quantum Information Technologies
- Shanghai Municipal Science and Technology Major Project [2019SHZDZX01]
- Shanghai Rising-Star Program [20QA1410000]
- UK Engineering and Physical Sciences Research Council (EPSRC) [EP/P01058X/1]
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Researchers have identified over 80 magnetic Feshbach resonances in collisions of ultracold (NaK)-Na-23-K-40 with K-40, suggesting that they are likely long-range states of triatomic complexes where the quantum numbers of separated atom and molecule are preserved. These resonant states are distinct from the chaotic bath of short-range states and are expected to be a common feature of alkali-metal diatom + atom systems.
We present measurements of more than 80 magnetic Feshbach resonances in collisions of ultracold (NaK)-Na-23-K-40 with K-40. We assign quantum numbers to a group of low-field resonances and show that they are probably due to long-range states of the triatomic complex in which the quantum numbers of the separated atom and molecule are approximately preserved. The resonant states are not members of chaotic bath of short-range states. Similar resonances are expected to be a common feature of alkali-metal diatom + atom systems.
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