Evolution of Fermion Pairing from Three to Two Dimensions
Author(s)
Sommer, Ariel Tjodolv; Cheuk, Lawrence W.; Zwierlein, Martin Wolfram; Ku, Mark J. H.; Bakr, Waseem S
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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.
Date issued
2012-01Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold AtomsJournal
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
ISSN
0031-9007
1079-7114