We investigate the scattering of a high-spin spherical atom Cr ($^7$S) with a closed shell atom Yb ($^1$S). We evaluate the spin-spin interaction arising from the multiple unpaired electrons from the Cr atom perturbed by the Yb atom, and show this provides a substantial coupling. We perform calculations of the magnetic Feshbach resonances this causes, and show are guaranteed to exist at low magnetic fields (below $\sim250$ G) with experimentally useful widths, regardless of the scattering length. This system has advantages over other similar systems such as alkali-metal+alkaline-earth systems – where the resonances are extremely narrow – and systems involving non-s-state atoms such as Er or Dy – which are extremely hard to make accurate microscopic models of. Applications of this system could include a starting point to form novel high-spin molecules or controlling interactions in a mixed gas of dipolar and non-dipolar atoms.
|Presenter name||Matthew Frye|
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