Several experimental groups are now working with mixtures of alkali-metal atoms and closed-shell atoms such as Sr or Yb, with the goal of forming molecules in doublet-Sigma states. We have shown that such systems can have interspecies Feshbach resonances due to short-range coupling between hyperfine states due to the dependence of the hyperfine coupling on the internuclear distance [PRL 105, 153201 (2010)]. However, these resonances mostly occur at high fields (>1000 G) and are very narrow. In this talk I will explore the factors that determine the positions and widths and the circumstances under which magnetoassociation to form molecules is likely to be possible.
To begin viewing slides, click on the first slide below. (Or, view as pdf.)
Author entry (protected)