Observation of a strongly interacting degenerate Fermi gas of atoms.
Publication
, Journal Article
O'Hara, KM; Hemmer, SL; Gehm, ME; Granade, SR; Thomas, JE
Published in: Science (New York, N.Y.)
December 2002
We report on the observation of a highly degenerate, strongly interacting Fermi gas of atoms. Fermionic lithium-6 atoms in an optical trap are evaporatively cooled to degeneracy using a magnetic field to induce strong, resonant interactions. Upon abruptly releasing the cloud from the trap, the gas is observed to expand rapidly in the transverse direction while remaining nearly stationary in the axial direction. We interpret the expansion dynamics in terms of collisionless superfluid and collisional hydrodynamics. For the data taken at the longest evaporation times, we find that collisional hydrodynamics does not provide a satisfactory explanation, whereas superfluidity is plausible.
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Published In
Science (New York, N.Y.)
DOI
EISSN
1095-9203
ISSN
0036-8075
Publication Date
December 2002
Volume
298
Issue
5601
Start / End Page
2179 / 2182
Related Subject Headings
- General Science & Technology
Citation
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MLA
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O’Hara, K. M., Hemmer, S. L., Gehm, M. E., Granade, S. R., & Thomas, J. E. (2002). Observation of a strongly interacting degenerate Fermi gas of atoms. Science (New York, N.Y.), 298(5601), 2179–2182. https://doi.org/10.1126/science.1079107
O’Hara, K. M., S. L. Hemmer, M. E. Gehm, S. R. Granade, and J. E. Thomas. “Observation of a strongly interacting degenerate Fermi gas of atoms.” Science (New York, N.Y.) 298, no. 5601 (December 2002): 2179–82. https://doi.org/10.1126/science.1079107.
O’Hara KM, Hemmer SL, Gehm ME, Granade SR, Thomas JE. Observation of a strongly interacting degenerate Fermi gas of atoms. Science (New York, NY). 2002 Dec;298(5601):2179–82.
O’Hara, K. M., et al. “Observation of a strongly interacting degenerate Fermi gas of atoms.” Science (New York, N.Y.), vol. 298, no. 5601, Dec. 2002, pp. 2179–82. Epmc, doi:10.1126/science.1079107.
O’Hara KM, Hemmer SL, Gehm ME, Granade SR, Thomas JE. Observation of a strongly interacting degenerate Fermi gas of atoms. Science (New York, NY). 2002 Dec;298(5601):2179–2182.
Published In
Science (New York, N.Y.)
DOI
EISSN
1095-9203
ISSN
0036-8075
Publication Date
December 2002
Volume
298
Issue
5601
Start / End Page
2179 / 2182
Related Subject Headings
- General Science & Technology