Evolution of Fermion Pairing from Three to Two Dimensions
Name
Sommer-2012-Evolution of Fermion Pairing from Three to Two Dimensions.pdf
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Author(s)
Sommer, Ariel Tjodolv
Cheuk, Lawrence W.
Zwierlein, Martin Wolfram
Ku, Mark J. H.
Bakr, Waseem S
Date Issued
January 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Sommer, Ariel et al. “Evolution of Fermion Pairing from Three to Two Dimensions.” Physical Review Letters 108.4 (2012): Web. 17 May 2012. © 2012 American Physical Society
Version
Final published version
Abstract
We follow the evolution of fermion pairing in the dimensional crossover from three-dimensional to two-dimensional as a strongly interacting Fermi gas of [superscript 6]Li atoms becomes confined to a stack of two-dimensional layers formed by a one-dimensional optical lattice. Decreasing the dimensionality leads to the opening of a gap in radio-frequency spectra, even on the Bardeen-Cooper-Schrieffer side of a Feshbach resonance. The measured binding energy of fermion pairs closely follows the theoretical two-body binding energy and, in the two-dimensional limit, the zero-temperature mean-field Bose-Einstein-condensation to Bardeen-Cooper-Schrieffer crossover theory.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.045302
