Scientific Results

Feshbach resonances in Na-23 + K-39 mixtures and refined molecular potentials for the NaK molecule

Year: 2019

Authors: Hartmann T., Schulze T.A., Voges, K.K., Gersema P., Gempel M.W., Tiemann E., Zenesini A., Ospelkaus S.

Autors Affiliation: Leibniz Univ Hannover, Inst Quantenopt, D-30167 Hannover, Germany

Abstract: We present a detailed study of interspecies Feshbach resonances of the bosonic Na-23 + K-39 mixture for magnetic fields up to 750 G in various collision channels. A total of 14 Feshbach resonances are reported, as well as four zero crossings of the scattering length and three inelastic two-body loss features. We use the observed magnetic-field locations of the resonant features together with the known data on Na-23 + K-40 to refine the singlet and triplet ground-state potentials of NaK and achieve a consistent description of Feshbach resonances for both the Bose-Bose mixture of Na-23 + K-39 and the Bose-Fermi mixture of Na-23 + K-40. We also discuss the influence of the interplay between inelastic two-body and three-body processes on the observation of a Feshbach resonance.


Volume: 99(3)      Pages from: 032711-1  to: 032711-7

KeyWords: Feshbach resonances, Cold Atoms, Mixtures
DOI: 10.1103/PhysRevA.99.032711

This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more