Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach resonances and scattering properties of 6Li and 40K

Abstract

We report on the observation of Feshbach resonances in an ultracold mixture of two fermionic species, 6Li and 40K. The experimental data are interpreted using a simple asymptotic bound state model and full coupled channels calculations. This unambiguously assigns the observed resonances in terms of various s- and p-wave molecular states and fully characterizes the ground-state scattering properties in any combination of spin states.

arXiv comment4 pages, 4 figures, 1 table

References in corpus (18)

• Production of cold molecules via magnetically tunable Feshbach resonances
• Pairing and Phase Separation in a Polarized Fermi Gas
• Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
• Interior Gap Superfluidity
• Tuning p-wave interactions in an ultracold Fermi gas of atoms
• Calculation of accurate permanent dipole moments of the lowest ${}^{1,3}{\Sigma }^{+}$ states of heteronuclear alkali dimers using extended basis sets
• Observation of Heteronuclear Feshbach Resonances in a Bose-Fermi Mixture
• Observation of Feshbach resonances between two different atomic species
• Quantum degenerate two-species Fermi-Fermi mixture coexisting with a Bose-Einstein condensate
• P-wave Feshbach resonances of ultra-cold ${}^6$Li
• Feshbach Resonances in Fermionic Lithium-6
• High-precision calculations of van der Waals coefficients for heteronuclear alkali-metal dimers
• Feshbach spectroscopy of a K-Rb atomic mixture
• Magnetic control of the interaction in ultracold K-Rb mixtures
• Two-species fermion mixtures with population imbalance
• Diatomic molecules in ultracold Fermi gases - Novel composite bosons
• Resonant scattering properties close to a p-wave Feshbach resonance
• Crystalline phase of strongly interacting Fermi mixtures

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