Ultracold Fermionic Feshbach Molecules of ${}^{23}$Na${}^{40}$K

Abstract

We report on the formation of ultracold fermionic Feshbach molecules of ${}^{23}$Na${}^{40}$K, the first fermionic molecule that is chemically stable in its ground state. The lifetime of the nearly degenerate molecular gas exceeds 100 ms in the vicinity of the Feshbach resonance. The measured dependence of the molecular binding energy on the magnetic field demonstrates the open-channel character of the molecules over a wide field range and implies significant singlet admixture. This will enable efficient transfer into the singlet vibrational ground state, resulting in a stable molecular Fermi gas with strong dipolar interactions.

arXiv comment5 pages, 4 figures

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Cited by in corpus (149)

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• Bose polarons near quantum criticality
• Impurity in a Bose-Einstein condensate and the Efimov effect
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• Variational study of polarons in Bose-Einstein condensates
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• Renormalization group approach to the Fröhlich polaron model: application to impurity-BEC problem
• Few-body physics in resonantly interacting ultracold quantum gases
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• Controlled state-to-state atom-exchange reaction in an ultracold atom-dimer mixture
• A compact high-flux source of cold sodium atoms
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• Ultra-cold Fermi gases with resonant dipole-dipole interaction
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• Fixed-node diffusion Monte Carlo study of the BCS-BEC crossover in a bilayer system of fermionic dipoles
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• The Molecular Hubbard Hamiltonian: Field Regimes and Molecular Species
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• A quantum degenerate Bose-Fermi mixture of ${}^{41}$K and ${}^6$Li
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• Quasi-molecular bosonic complexes -- a pathway to atomic analog of SQUID with controlled sensitivity
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• Formation of ultracold ${}^{39}$K${}^{133}$Cs Feshbach molecules
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• First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination
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• Polarization-Driven Charge Frustration and Emergent Phases in the One-Dimensional Extended Hubbard Model
• A toy model for the dipolar-induced resonance in quasi-one-dimensional systems