Ultracold Fermionic Feshbach Molecules of [superscript 23]Na[superscript 40]K
Name
Wu-2012-Ultracold Fermionic Feshbach Molecules of.pdf
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Author(s)
Wu, Cheng-Hsun
Park, Jee Woo
Ahmadi, Peyman
Will, Sebastian
Zwierlein, Martin Wolfram
Date Issued
August 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Wu, Cheng-Hsun et al. “Ultracold Fermionic Feshbach Molecules of [superscript 23]Na[superscript 40]K.” Physical Review Letters 109.8 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We report on the formation of ultracold weakly bound Feshbach molecules of [superscript 23]Na[superscript 40]K, the first fermionic molecule that is chemically stable in its absolute ground state. The lifetime of the nearly degenerate molecular gas exceeds 100 ms in the vicinity of the Feshbach resonance. The measured dependence of the molecular binding energy on the magnetic field demonstrates the open-channel character of the molecules over a wide field range and implies significant singlet admixture. This will enable efficient transfer into the singlet vibrational ground state, resulting in a stable molecular Fermi gas with strong dipolar interactions.
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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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.085301
