Ultracold Interactions between Li Feshbach molecules and Yb atoms

We report on collisional studies in an ultracold three-component system of $\mathrm{^{174}Yb}$ and two spin states of $\mathrm{^{6}Li}$ with tunable interactions. The Li-Li \emph{s}-wave scattering length can be varied through a Feshbach resonance at 834 G. We study the effect of the non-resonant Yb cloud on the formation rate and stability of Li Feshbach dimers and compare to theoretical prediction. We discuss the potential usefulness of a third non-resonant component for the efficient production and cooling of Feshbach molecules.