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- W3177421036 abstract "We observe characteristic atomic behaviors in the Bose-Einstein-condensation-Bardeen-Cooper-Schrieffer (BEC-BCS) crossover, by accurately tuning the magnetic field across the Feshbach resonance of lithium atoms. The magnetic field is calibrated by measuring the Zeeman shift of the optical transition. A non-monotonic anisotropic expansion is observed across the Feshbach resonance. The density distribution is explored in different interacting regimes, where a condensate of diatomic molecules forms in the BEC limint with the indication of a bimodal distribution. We also measure the three-body recombination atom loss in the BEC-BCS crossover, and find that the magnetic field of the maximum atom loss is on the BEC side and gets closer to the Feshbach resonance when decreasing the atom temperature, which agrees with previous experiments and theoretical prediction. This work builds up a controllable platform for the study on the strongly interacting Fermi gas." @default.
- W3177421036 created "2021-07-05" @default.
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- W3177421036 date "2021-06-23" @default.
- W3177421036 modified "2023-10-18" @default.
- W3177421036 title "Observation of the BEC-BCS Crossover in a Degenerate Fermi Gas of Lithium Atoms" @default.
- W3177421036 doi "https://doi.org/10.1088/1674-1056/ac0dae" @default.
- W3177421036 hasPublicationYear "2021" @default.
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