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

Tomohiro Yoshida; Youichi Yanase

doi:10.1103/physreva.84.063605

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arXiv · 1111.2407

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

Tomohiro Yoshida·Youichi Yanase

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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.

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Tomohiro Yoshida, Youichi Yanase. 2011-11-15. Rotating Fulde-Ferrell-Larkin-Ovchinnikov state in cold Fermi gases. https://doi.org/10.1103/physreva.84.063605

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