LOW-FIELD FESHBACH RESONANCES AND THREE-BODY LOSSES IN A FERMIONIC QUANTUM GAS OF 161Dy

We report on the high-resolution Feshbach spectroscopy on a degenerate, spin-polarized Fermi of Dy-161 gas of atoms, measuring three-body recombination losses at a low magnetic field. For field strengths up to 1 G, we identify as much as 44 resonance features and observe the plateaus of very low losses. For four selected typical resonances, we study the dependence of the three-body recombination rate coefficient on the magnetic resonance detuning and on the temperature. We observe a strong suppression of losses with decreasing temperature already for small detunings from the resonance. The characterization of complex behavior of the three-body losses of fermionic Dy-161 is important for future applications of this peculiar species in research on atomic quantum gases.

Automated summary

We report on high-resolution Feshbach spectroscopy conducted on a degenerate, spin-polarized Fermi gas of Dy-161 atoms, measuring the losses from three-body recombination at a low magnetic field. Up to 44 resonance features were observed for magnetic field strengths of up to 1 G, with plateaus of very low losses. The dependence of the three-body recombination rate coefficient on magnetic resonance detuning and temperature was studied, revealing a strong suppression of losses with decreasing temperature even for small detunings from the resonance. Characterizing the complex behavior of three-body losses in fermionic Dy-161 is crucial for future applications in atomic quantum gas research.