Polarons in the radio-frequency spectrum of a quasi-two-dimensional Fermi gas

Y. Zhang; W. Ong; I. Arakelyan; J. E. Thomas

doi:10.1103/physrevlett.108.235302

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arXiv · 1201.3560

Polarons in the radio-frequency spectrum of a quasi-two-dimensional Fermi gas

Y. Zhang·W. Ong·I. Arakelyan·J. E. Thomas

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Abstract

We measure radio-frequency spectra for a two-component mixture of a $^6$Li atomic Fermi gas in the quasi-two-dimensional regime. Near the Feshbach resonance, where the transverse Fermi energy is large compared to the confinement-induced dimer binding energies for the initial and final states, we find that the observed resonances do not correspond to transitions between confinement-induced dimers. The spectrum appears to be well-described by transitions between noninteracting polaron states in two dimensions.

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Y. Zhang, W. Ong, I. Arakelyan, J. E. Thomas. 2012-01-17. Polarons in the radio-frequency spectrum of a quasi-two-dimensional Fermi gas. https://doi.org/10.1103/physrevlett.108.235302

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