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

Journal Article · Thu Dec 15 04:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.063605· OSTI ID:22095656

Yoshida, Tomohiro; Yanase, Youichi ^[1]

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1. Department of Physics, Niigata University, Niigata 950-2181 (Japan)

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 the stability of the FFLO states in the quasi-one-dimensional regime on the basis of the Bogoliubov-de Gennes equation. We find that two FFLO phases, i.e., the half-quantum-vortex state and the intermediate state of the Fulde-Ferrell (FF) state and the 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 the T-P plane and the 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.

• OSTI ID: 22095656
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ENERGY LEVELS
FERMI GAS
FLUX QUANTIZATION
INTERMEDIATE STATE
ONE-DIMENSIONAL CALCULATIONS
ORDER PARAMETERS
PHASE DIAGRAMS
POLARIZATION
ROTATION
SUPERFLUIDITY
TRAPS
VORTICES