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Updated: May 24, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Magnetically tunable Feshbach resonances in ultracold Li-Yb mixtures
Daniel A Brue1, Jeremy M Hutson
1Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom. daniel.brue@durham.ac.uk
Abstract:
We investigate the possibility of forming Li+Yb ultracold molecules by magnetoassociation in mixtures of ultracold atoms. We find that magnetically tunable Feshbach resonances exist, but are extremely narrow for even-mass ytterbium isotopes, which all have zero spin. For odd-mass Yb isotopes, however, there is a new mechanism due to hyperfine coupling between the electron spin and the Yb nuclear magnetic moment. This mechanism produces Feshbach resonances for fermionic Yb isotopes that can be more than 2 orders of magnitude larger than for the bosonic counterparts.
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