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.

5 pages, 4 figures

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Cited by in corpus (48)

• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Variational study of polarons in Bose-Einstein condensates
• Formation of Ultracold NaRb Feshbach Molecules
• Quantum Monte Carlo Study of a Resonant Bose-Fermi Mixture
• Induced interactions in a superfluid Bose-Fermi mixture
• Weyl Superfluidity in a Three-dimensional Dipolar Fermi Gas
• Bloch oscillations of bosonic lattice polarons
• Ultracold chemistry with alkali-metal-rare-earth molecules
• Efimov States of Heavy Impurities in a Bose-Einstein Condensate
• Universality of weakly bound dimers and Efimov trimers close to Li-Cs Feshbach resonances
• Condensed phase of Bose-Fermi mixtures with a pairing interaction
• Efficient conversion of closed-channel dominated Feshbach molecules of ${}^{23}$Na${}^{40}$K to their absolute ground state
• A High Phase-Space Density Gas of NaCs Feshbach Molecules
• Feshbach resonances, molecular bound states and prospects of ultracold molecule formation in mixtures of ultracold K and Cs
• Feshbach Loss Spectroscopy in an Ultracold ${}^{23}$Na and ${}^{40}$K Mixture
• Properties of the density-wave phase of a two-dimensional dipolar Fermi gas
• Fixed-node diffusion Monte Carlo study of the BCS-BEC crossover in a bilayer system of fermionic dipoles
• Unconventional Spin Density Waves in Dipolar Fermi Gases
• Enhanced association and dissociation of heteronuclear Feshbach molecules in a microgravity environment
• Density-wave phases of dipolar fermions in a bilayer
• Coexistence of density wave and superfluid order in a dipolar Fermi gas
• Optical Feshbach resonances and ground state molecule production in the RbHg system
• Spontaneous time-reversal symmetry breaking for spinless fermions on a triangular lattice
• Strongly interacting Bose-Fermi mixture: mediated interaction, phase diagram and sound propagation
• Optically trapped Feshbach molecules of fermionic 161Dy and 40K
• Unconventional symmetries of Fermi liquid and Cooper pairing properties with electric and magnetic dipolar fermions
• Fulde-Ferrell-Larkin-Ovchinnikov state in bilayer dipolar systems
• Structural transitions of nearly second order in classical dipolar gases
• Cold atom-dimer reaction rates with ${}^4$He, ${}^{6,7}$Li and ${}^{23}$Na
• Second-order interaction corrections to the Fermi surface and the quasiparticle properties of dipolar fermions in three dimensions
• Long-lived fermionic Feshbach molecules with tunable $p$-wave interactions
• A local exchange theory for trapped dipolar gases
• Feshbach molecule formation through an oscillating magnetic field: subharmonic resonances
• Quantum Monte Carlo and perturbative study of two-dimensional Bose-Fermi mixtures
• Observation of a Halo Trimer in an Ultracold Bose-Fermi Mixture
• Boson-fermion pairing and condensation in two-dimensional Bose-Fermi mixtures
• Resonance-to-bound transition of ${}^5$He in neutron matter and its analogy with heteronuclear Feshbach molecule
• Feshbach resonances in an ultracold ${}^7$Li-${}^{133}$Cs Bose-Bose mixture
• Itinerant ferromagnetism of a dipolar Fermi gas with Raman-induced spin-orbit coupling
• Energy of strongly attractive Bose-Fermi mixtures
• Leggett mode in a two-component Fermi gas with dipolar interactions
• Mechanical stability of resonant Bose-Fermi mixtures
• Formation of ultracold ${}^{39}$K${}^{133}$Cs Feshbach molecules
• Delta-Kick Collimation of Heteronuclear Feshbach Molecules
• Polarization-Driven Charge Frustration and Emergent Phases in the One-Dimensional Extended Hubbard Model
• Quantum phases of hard-core dipolar bosons in coupled 1D optical lattices
• First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination
• A toy model for the dipolar-induced resonance in quasi-one-dimensional systems