title: Magnetically tunable Feshbach resonances in ultracold Li-Yb mixtures.
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.
authors.affiliation: Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom. daniel.brue@durham.ac.uk
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Brue
authors.forename: Jeremy M
authors.initials: JM
authors.lastname: Hutson