Resonantly Interacting Fermi-Fermi Mixture of ^{161}Dy and ^{40}K.

@article{Ravensbergen2020ResonantlyIF,
  title={Resonantly Interacting Fermi-Fermi Mixture of ^\{161\}Dy and ^\{40\}K.},
  author={C. Ravensbergen and E. Soave and V. Corre and M. Kreyer and B. Huang and E. Kirilov and R. Grimm},
  journal={Physical review letters},
  year={2020},
  volume={124 20},
  pages={
          203402
        }
}
We report on the realization of a Fermi-Fermi mixture of ultracold atoms that combines mass imbalance, tunability, and collisional stability. In an optically trapped sample of ^{161}Dy and ^{40}K, we identify a broad Feshbach resonance centered at a magnetic field of 217 G. Hydrodynamic expansion profiles in the resonant interaction regime reveal a bimodal behavior resulting from mass imbalance. Lifetime studies on resonance show a suppression of inelastic few-body processes by orders of… Expand
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