Journal
CHINESE PHYSICS LETTERS
Volume 37, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/37/5/053702
Keywords
37; 10; Jk; 67; 85; -d; 74; 25; Dw; 03; 75; Ss
Categories
Funding
- National Natural Science Foundation of China [11774309, 11674283]
- Natural Science Foundation of Zhejiang Province of China [LZ13A040001]
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We study the superfluid behavior of a population imbalanced ultracold atomic Fermi gases with a short range attractive interaction in a one-dimensional (1D) optical lattice, using a pairing fluctuation theory. We show that, besides widespread pseudogap phenomena and intermediate temperature superfluidity, the superfluid phase is readily destroyed except in a limited region of the parameter space. We find a new mechanism for pair hopping, assisted by the excessive majority fermions, in the presence of continuum-lattice mixing, which leads to an unusual constant Bose-Einstein condensate (BEC) asymptote for T-c that is independent of pairing strength. In result, on the BEC side of unitarity, superfluidity, when it exists, may be strongly enhanced by population imbalance.
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