Motion of a Solitonic Vortex in the BEC-BCS Crossover
Name
PhysRevLett.113.065301.pdf
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681.73 KB
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Author(s)
Ji, Wenjie
Mukherjee, Biswaroop
Cheuk, Lawrence W.
Yefsah, Tarik
Guardado Sanchez, Elmer
Zwierlein, Martin Wolfram
Ku, Mark J. H.
Date Issued
August 2014
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Ku, Mark J. H., et al. "Motion of a Solitonic Vortex in the BEC-BCS Crossover." Phys. Rev. Lett. 113, 065301 (August 2014). © 2014 American Physical Society
Version
Final published version
Abstract
We observe a long-lived solitary wave in a superfluid Fermi gas of [superscript 6]Li atoms after phase imprinting. Tomographic imaging reveals the excitation to be a solitonic vortex, oriented transverse to the long axis of the cigar-shaped atom cloud. The precessional motion of the vortex is directly observed, and its period is measured as a function of the chemical potential in the BEC-BCS crossover. The long period and the correspondingly large ratio of the inertial to the bare mass of the vortex are in good agreement with estimates based on superfluid hydrodynamics that we derive here using the known equation of state in the BEC-BCS crossover.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT-Harvard Center for Ultracold Atoms
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.113.065301
