Magnetically tunable Feshbach resonances in ultracold gases of europium atoms and mixtures of europium and alkali-metal atoms

Abstract

We investigate magnetically tunable Feshbach resonances between ultracold europium atoms and between europium and alkali-metal atoms using multichannel quantum scattering calculations. For ultracold gases of europium atoms both homonuclear ${}^{153}$Eu+${}^{153}$Eu and heteronuclear ${}^{151}$Eu+${}^{153}$Eu systems are studied. Calculations for mixtures of europium and alkali-metal atoms are carried out for prototype systems of ${}^{153}$Eu+${}^{87}$Rb and ${}^{153}$Eu+${}^7$Li. We analyze the prospects for the control of scattering properties, observation of quantum chaotic behavior, and magnetoassociation into ultracold polar and paramagnetic molecules. We show that favorable resonances can be expected at experimentally feasible magnetic field strengths below 1000G for all investigated atomic combinations. For Eu atoms, a rich spectrum of resonances is expected as a result of the competition between relatively weak short-range spin-exchange and strong long-range magnetic dipole-dipole interactions, where the dipolar interaction induces measurable resonances. A high density of resonances is expected at magnetic field strengths below 200G without pronounced quantum chaos signatures. The present results may be useful for the realization and application of dipolar atomic and molecular quantum gases based on europium atoms in many-body physics.

arXiv comment13 pages, 8 figures, 2 tables

References in corpus (51)

• Many-Body Physics with Ultracold Gases
• Feshbach Resonances in Ultracold Gases
• The physics of dipolar bosonic quantum gases
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Bose-Einstein condensation of chromium
• A Strongly Dipolar Bose-Einstein Condensate of Dysprosium
• Bose-Einstein Condensation of Erbium
• Condensed Matter Theory of Dipolar Quantum Gases
• Observing the Rosensweig instability of a quantum ferrofluid
• Self-bound droplets of a dilute magnetic quantum liquid
• Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
• Strong dipolar effects in a quantum ferrofluid
• Quantum degenerate dipolar Fermi gas
• Stabilizing a purely dipolar quantum gas against collapse
• Extended Bose-Hubbard Models with Ultracold Magnetic Atoms
• Quantum Chaos in Ultracold Collisions of Erbium
• Controlling atom-atom interaction at ultralow temperatures by dc electric fields
• Reaching Fermi degeneracy via universal dipolar scattering
• Observation of an orbital interaction-induced Feshbach resonance in 173-Yb
• Observation of Feshbach resonances in an ultracold gas of ${}^{52}$Cr
• Emergence of chaotic scattering in ultracold Er and Dy
• Ultracold RbSr molecules can be formed by magnetoassociation
• Magneto-Optical Trap for Thulium Atoms
• Observation of Fermi surface deformation in a dipolar quantum gas
• Ultracold Dipolar Molecules Composed of Strongly Magnetic Atoms
• Observation of Feshbach resonances between alkali and closed-shell atoms
• Magneto-Optical Trapping of Holmium Atoms
• Broad universal Feshbach resonances in the chaotic spectrum of Dysprosium atoms
• Anisotropy induced Feshbach resonances in a quantum dipolar gas of magnetic atoms
• Quantum reactive scattering of ultracold NH($X{}^3{\Sigma }^{-}$) radicals in a magnetic trap
• Controlling interactions between highly-magnetic atoms with Feshbach resonances
• A two-species five-beam magneto-optical trap for highly magnetic Er and Dy atoms
• Avoided crossings between bound states of ultracold Cesium dimers
• Resonant Control of Interaction Between Different Electronic States
• Ultracold Heteronuclear Mixture of Ground and Excited State Atoms
• Accurate Determination of the Dynamical Polarizability of Dysprosium
• Many-body interferometry of magnetic polaron dynamics
• Long-lived complexes and signatures of chaos in ultracold K2+Rb collisions
• The approach to chaos in ultracold atomic and molecular physics: statistics of near-threshold bound states for Li+CaH and Li+CaF
• Controlling magnetic Feshbach resonances in polar open-shell molecules with non-resonant light
• Magnetically tunable Feshbach resonances in Li+Er
• Magneto-optical trapping of optically pumped metastable europium
• Ab initio properties of the ground-state polar and paramagnetic europium-alkali-metal-atom and europium-alkaline-earth-metal-atom molecules
• Ultracold magnetically tunable interactions without radiative charge transfer losses between Ca${}^{+}$, Sr${}^{+}$, Ba${}^{+}$, and Yb${}^{+}$ ions and Cr atoms
• Prospects for ultracold polar and magnetic chromium-closed-shell-atom molecules
• Quantum chaos in ultracold collisions between Yb(${}^1$S${}_0$) and Yb(${}^3$P${}_2$)
• Ultracold mixtures of metastable He and Rb: scattering lengths from ab initio calculations and thermalization measurements
• CrRb: a molecule with large magnetic and electric dipole moments
• Chaotic scattering in the presence of a dense set of overlapping Feshbach resonances
• Fractal Universality in Near-Threshold Magnetic Lanthanide Dimers
• Photoassociation of spin polarized Chromium

Cited by in corpus (11)

• Dipolar physics: A review of experiments with magnetic quantum gases
• Highly polar molecules consisting of a copper or silver atom interacting with an alkali-metal or alkaline-earth-metal atom
• Bose-Einstein Condensation of Europium
• Narrow-line magneto-optical trap for europium
• Relativistic aspects of orbital and magnetic anisotropies in the chemical bonding and structure of lanthanide molecules
• Prospects of forming high-spin polar molecules from ultracold atoms
• Quantum chaos in Feshbach resonances of the ErYb system
• Magnetic properties and quench dynamics of two interacting ultracold molecules in a trap
• Purely long-range polar molecules composed of identical lanthanide atoms
• Spin--spin interaction and magnetic Feshbach resonances in collisions of high-spin atoms with closed-shell atoms
• Van der Waals coefficients for interactions of dysprosium and erbium atoms with alkali-metal and alkaline-earth-metal atoms