Monday, July 8, 2013

1307.1639 (Shun Uchino et al.)

Unconventional superfluidity in quasi-one dimension    [PDF]

Shun Uchino, Akiyuki Tokuno, Thierry Giamarchi
We show that an unconventional superfluid triggered by a spin-orbit coupling is realized for repulsively interacting quasi-one dimensional fermions. A competition between spin singlet and triplet pairings occurs due to the breaking of inversion symmetry. We show that both superfluid orders decay algebraically with the same exponent except for special coupling constants for which a dominant superfluid is determined solely by the spin-orbit coupling. We propose an experiment to observe such phases with cold atoms.
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