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Prospects of forming ultracold molecules in double-Sigma states by magnetoassociation of alkali-metal atoms with Yb.

Brue, Daniel A. and Hutson, Jeremy M. (2013) 'Prospects of forming ultracold molecules in double-Sigma states by magnetoassociation of alkali-metal atoms with Yb.', Physical review A., 87 (5). 052709.

Abstract

We explore the feasibility of producing ultracold diatomic molecules with nonzero electric and magnetic dipole moments by magnetically associating two atoms, one with zero electron spin and one with nonzero spin. Feshbach resonances arise through the dependence of the hyperfine coupling on internuclear distance.We survey the Feshbach resonances in diatomic systems combining the nine stable alkali-metal isotopes with those of Yb, focusing on the illustrative examples of RbYb and CsYb. We show that the resonance widths may expressed as a product of physically comprehensible terms in the framework of Fermi’s golden rule. The resonance widths depend strongly on the background scattering length, which may be adjusted by selecting the Yb isotope, and on the hyperfine coupling constant and the magnetic field. In favorable cases the resonances may be over 100 mG wide.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevA.87.052709
Publisher statement:© 2013 American Physical Society.
Date accepted:No date available
Date deposited:24 January 2014
Date of first online publication:May 2013
Date first made open access:No date available

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