Phase separation in a polarized Fermi gas with spin-orbit coupling

Details Phase separation in a polarized Fermi gas with spin-orbit coupling Phase separation in a polarized Fermi gas with spin-orbit coupling

2011-06-28

arxiv.org/abs/1106.5667v2

Phys. Rev. A 84, 031608(R) (2011)

Physics

Condensed Matter

Quantum Gases

4.2 pages, 5 figures, replaced with the published version

Scientific paper

10.1103/PhysRevA.84.031608

We study the phase separation of a spin polarized Fermi gas with spin-orbit coupling near a wide Feshbach resonance. As a result of the competition between spin-orbit coupling and population imbalance, the phase diagram for a uniform gas develops a rich structure of phase separation involving gapless superfluid states which are topologically non-trivial. We find that these novel gapless phases can be stabilized by intermediate spin-orbit coupling strengths. We then demonstrate the phase separation induced by an external trapping potential and discuss the optimal parameter region for the experimental observation of the gapless superfluid phases.

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