Exploring ultracold collisions in ${}^6$Li-${}^{53}$Cr Fermi mixtures: Feshbach resonances and scattering properties of a novel alkali-transition metal system

Abstract

We investigate ultracold collisions in a novel mixture of ${}^6$Li and ${}^{53}$Cr fermionic atoms, discovering more than 50 interspecies Feshbach resonances via loss spectroscopy. Building a full coupled-channel model, we unambiguously characterize the ${}^6$Li-${}^{53}$Cr scattering properties and yield predictions for other isotopic pairs. In particular, we identify various Feshbach resonances that enable the controlled tuning of elastic $s$- and $p$-wave ${}^6$Li-${}^{53}$Cr interactions. Our studies thus make lithium-chromium mixtures emerge as optimally-suited platforms for the experimental search of elusive few- and many-body regimes of highly-correlated fermionic matter, and for the realization of a new class of ultracold polar molecules possessing both electric and magnetic dipole moments.

arXiv comment12 pages, 4 figures, 4 tables

References in corpus (59)

• Feshbach Resonances in Ultracold Gases
• Excitons in atomically thin transition metal dichalcogenides
• A High Phase-Space-Density Gas of Polar Molecules
• Inhomogeneous Superconductivity in Condensed Matter and QCD
• Weakly bound dimers of fermionic atoms
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Metastability and Coherence of Repulsive Polarons in a Strongly Interacting Fermi Mixture
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Quantum degenerate dipolar Fermi gas
• Polarons, Dressed Molecules, and Itinerant Ferromagnetism in ultracold Fermi gases
• Creation of an ultracold gas of ground-state ${}^{23}{\mathrm{Na}}^{87}\mathrm{Rb}$ molecules
• Ultrafast many-body interferometry of impurities coupled to a Fermi sea
• Three-body forces: From cold atoms to nuclei
• Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach resonances and scattering properties of 6Li and 40K
• Quantum phase transitions across p-wave Feshbach resonance
• Multiplet Structure of Feshbach Resonances in non-zero partial waves
• Few-body physics with ultracold atomic and molecular systems in traps
• Reaching Fermi degeneracy via universal dipolar scattering
• Universal many-body response of heavy impurities coupled to a Fermi sea
• Ultracold Heteronuclear Fermi-Fermi Molecules
• Decoherence of Impurities in a Fermi Sea of Ultracold Atoms
• Low-energy three-body dynamics in binary quantum gases
• Feshbach resonances in ultracold atomic and molecular collisions: threshold behaviour and suppression of poles in scattering lengths
• Universal Fermi gases in mixed dimensions
• Induced P-wave Superfluidity in Asymmetric Fermi Gases
• Collisional Cooling of Ultracold Molecules
• Trimers, molecules and polarons in imbalanced atomic Fermi gases
• Multichannel quantum-defect theory for slow atomic collisions
• Observation of Feshbach resonances between alkali and closed-shell atoms
• Atom-dimer scattering and long-lived trimers in fermionic mixtures
• Four-body Efimov effect
• Imbalanced Fermi Gases at Unitarity
• Hydrodynamic Expansion of a Strongly Interacting Fermi-Fermi Mixture
• Landau Effective Interaction between Quasiparticles in a Bose-Einstein Condensate
• Atom-dimer and dimer-dimer scattering in fermionic mixtures near a narrow Feshbach resonance
• Anisotropic pseudo-potential for polarized dilute quantum gases
• Feshbach resonances in the 6Li-40K Fermi-Fermi mixture: Elastic versus inelastic interactions
• Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixture
• Observation of "broad" d-wave Feshbach resonances with a triplet structure
• Five-Body Efimov Effect and Universal Pentamer in Fermionic Mixtures
• Resonantly Interacting Fermi-Fermi Mixture of ${}^{161}$Dy and ${}^{40}$K
• Feshbach resonances in $p$-wave three-body recombination within Fermi-Fermi mixtures of open-shell ${}^6$Li and closed-shell ${}^{173}$Yb atoms
• Lifshitz Point in the Phase Diagram of Resonantly Interacting ${}^{6}Li$-${}^{40}K$ Mixtures
• Bound states in a quasi-two-dimensional Fermi gas
• Crossover trimers connecting continuous and discrete scaling regimes
• Universal physics of 2+1 particles with non-zero angular momentum
• Universal clusters as building blocks of stable quantum matter
• Three-body recombination near a narrow Feshbach resonance in ${}^6$Li
• Feshbach resonances and weakly bound molecular states of boson-boson and boson-fermion NaK pairs
• Realization of a Cold Mixture of Fermionic Chromium and Lithium Atoms
• Three-body problem in a two-dimensional Fermi gas
• Beyond-mean-field description of a trapped unitary Fermi gas with mass and population imbalance
• Long range mediated interactions in a mixed dimensional system
• Lifetime of Feshbach dimers in a Fermi-Fermi mixture of ${}^6$Li and ${}^{40}$K
• Quantitative analysis of losses close to a d-wave open-channel Feshbach resonance in Potassium 39
• Realization of a high power optical trapping setup free from thermal lensing effects
• Mass-imbalanced fermionic mixture in a harmonic trap
• Fitting ultracold resonances without a fit

Cited by in corpus (14)

• Quantum mixtures of ultracold gases of neutral atoms
• Quartet Superfluid in Two-dimensional Mass-imbalanced Fermi Mixtures
• Ultracold LiCr: a new pathway to quantum gases of paramagnetic polar molecules
• Double-degenerate Fermi mixtures of ${}^6$Li and ${}^{53}$Cr atoms
• Observation of low-field Feshbach resonances between ${}^{161}$Dy and ${}^{40}$K
• Optically trapped Feshbach molecules of fermionic 161Dy and 40K
• Universality of Efimov states in highly mass-imbalanced cold-atom mixtures with van der Waals and dipole interactions
• Competing few-body correlations in ultracold Fermi polarons
• Three-body contact for fermions. I. General relations
• Dipole-Mode Spectrum and Hydrodynamic Crossover in a Resonantly Interacting Two-Species Fermion Mixture
• Spin--spin interaction and magnetic Feshbach resonances in collisions of high-spin atoms with closed-shell atoms
• Confinement-induced resonances for the creation of quasi-one-dimensional ultra cold gases of alkali--alkaline-earth dimers
• Universal clusters in quasi-two-dimensional ultracold Fermi mixtures
• Van der Waals coefficients for interactions of dysprosium and erbium atoms with alkali-metal and alkaline-earth-metal atoms