The prospects of forming ultracold molecules in ${}^2\Sigma$ states by magnetoassociation of alkali-metal atoms with Yb

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, focussing 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.

14 pages, 8 Figures

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Cited by in corpus (38)

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• Efficient production of long-lived ultracold Sr${}_2$ molecules
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• Rydberg atom mediated non-destructive readout of collective rotational states in polar molecule arrays
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• A versatile dual-species Zeeman slower for caesium and ytterbium
• Magnetically tunable Feshbach resonances in Li + Yb(${}^3{P}_J$)
• Active stabilization of kilogauss magnetic fields to the ppm level for magnetoassociation on ultranarrow Feshbach resonances
• Magnetic Feshbach resonances in ultracold collisions between Cs and Yb atoms
• Two-photon photoassociation spectroscopy of the ${}^2{\Sigma }^{+}$ YbLi molecular ground state
• Hyperfine structure of 2Sigma molecules containing alkaline-earth atoms
• Ultracold hydrogen atoms: a versatile coolant to produce ultracold molecules
• Relativistic many-body calculations of van der Waals coefficients for Yb-Li and Yb-Rb dimers
• Collision cross sections for the thermalization of cold gases
• Prospects of forming high-spin polar molecules from ultracold atoms
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• Sympathetic cooling of fluorine atoms with ultracold atomic hydrogen
• An ultracold, optically trapped mixture of {87}Rb and metastable {4}He atoms
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• Quantum annealing with pairs of ${}^2\Sigma$ molecules as qubits
• Intercombination line photoassociation spectroscopy of ${}^{87}$Rb${}^{170}$Yb
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• Spin--spin interaction and magnetic Feshbach resonances in collisions of high-spin atoms with closed-shell atoms
• Magnetic Feshbach resonances between atoms in ${}^2$S and ${}^3$P${}_0$ states: mechanisms and dependence on atomic properties
• Confinement-induced resonances for the creation of quasi-one-dimensional ultra cold gases of alkali--alkaline-earth dimers
• Enhancing quantum order with fermions by increasing species degeneracy
• Cold interactions and chemical reactions of linear polyatomic anions with alkali-metal and alkaline-earth-metal atoms
• Quantum Degenerate Mixtures of Cs and Yb