Feshbach resonances in ${}^{23}\mathrm{Na}+$${}^{39}\mathrm{K}$ mixtures and refined molecular potentials for the NaK molecule

Abstract

We present a detailed study of interspecies Feshbach resonances of the bosonic ${}^{23}\mathrm{Na}+$${}^{39}\mathrm{K}$ mixture for magnetic fields up to $750\mathrm{G}$ in various collision channels. A total of fourteen Feshbach resonances are reported, as well as four zero crossings of the scattering length and three inelastic two-body loss features. We use the observed magnetic field locations of the resonant features together with the known data on ${}^{23}\mathrm{Na}+$${}^{40}\mathrm{K}$ 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 ${}^{23}\mathrm{Na}+$${}^{39}\mathrm{K}$ as well as the Bose-Fermi mixture of ${}^{23}\mathrm{Na}+$${}^{40}\mathrm{K}$.

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Cited by in corpus (8)

• Diatomic molecules of alkali-metal and alkaline-earth-metal atoms: interaction potentials, dipole moments, and polarizabilities
• Quantized refrigerator for an atomic cloud
• Complexes formed in collisions between ultracold alkali-metal diatomic molecules and atoms
• Beyond Born-Oppenheimer approximation in ultracold atomic collisions
• Formation of ultracold weakly bound dimers of bosonic ${}^{23}{\text{Na}}^{39}\text{K}$
• A pathway to ultracold bosonic ${}^{23}{\text{Na}}^{39}\text{K}$ ground state molecules
• Observation of a Halo Trimer in an Ultracold Bose-Fermi Mixture
• Emergent four-body parameter in universal two-species bosonic systems