Rotating Fulde-Ferrell-Larkin-Ovchinnikov state in cold Fermi gases

Abstract

We study an effect of rotation on the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state of two component Fermi superfluid gases in a toroidal trap. We investigate a stability of the FFLO states in the quasi-one-dimensional regime on the basis of the Bogoliubov-de Gennes equation. We find that two novel FFLO phases, i.e., the half quantum vortex state and the intermediate state of Fulde-Ferrell (FF) state and Larkin-Ovchinnikov (LO) state, are stabilized by the rotation. The phase diagram for the FF state, LO state, intermediate state, and half quantum vortex state is shown in both T-P plane and T-h plane. We demonstrate characteristic features of these states, such as the order parameter, flux quantization, and local polarization. Several related works are discussed, and the advantages of cold Fermi gases are indicated.

10 pages, 9 figures. Accepted for publication in PRA; added references

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Cited by in corpus (7)

• The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
• Fulde-Ferrell-Larkin-Ovchinnikov states in a superconducting ring with magnetic fields: Phase diagram and the first-order phase transitions
• Radial Fulde-Ferrell-Larkin-Ovchinnikov state in a population-imbalanced Fermi gas
• Nambu-Jona Lasinio and Nonlinear Sigma Models in Condensed Matter Systems
• Luminescence in germania-silica fibers in 1-2 μm region
• Fulde-Ferrell states in unequally charged Fermi gases
• Anomalous Flux Quantization in the Spin-Imbalanced Attractive Hubbard Ring