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Observation of magnetic Feshbach resonances between Cs and 173Yb

Franzen, T. and Guttridge, A. and Wilson, K.E. and Segal, J. and Frye, M.D. and Hutson, J.M. and Cornish, S.L. (2022) 'Observation of magnetic Feshbach resonances between Cs and 173Yb.', Physical Review Research, 4 (4). 043072.


We report the observation of magnetic Feshbach resonances between 173 Yb and 133 Cs . In a mixture of Cs atoms prepared in the ( f = 3 , m f = 3 ) state and unpolarized fermionic 173 Yb , we observe resonant atom loss due to two sets of magnetic Feshbach resonances around 622 and 702 G. Resonances for individual Yb nuclear spin components m i , Yb are split by its interaction with the Cs electronic spin, which also provides the main coupling mechanism for the observed resonances. The observed splittings and relative resonance strengths are in good agreement with theoretical predictions from coupled-channel calculations.

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Publisher statement:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Date accepted:19 September 2022
Date deposited:12 December 2022
Date of first online publication:31 October 2022
Date first made open access:12 December 2022

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