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Phys. Rev. A 76, 011601(R) (2007) [4 pages]

Supercurrents in an atom-molecule gas in an optical ring lattice

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T. Wang1, J. Javanainen1, and S. F. Yelin1,2
1Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
2ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachussetts 02138, USA

Received 9 January 2007; revised 15 June 2007; published 3 July 2007

Atom and molecule currents in a Fermi gas in the neighborhood of a Feshbach resonance are studied in a one-dimensional optical ring lattice by directly diagonalizing small models. A rotational analogy of flux quantization is used to show that fraction of the current is carried by particles with twice the mass of an atom, which suggests pairing and superfluidity.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.011601
DOI:
10.1103/PhysRevA.76.011601
PACS:
03.75.Ss, 03.75.Kk, 03.75.Lm, 67.90.+z
 
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