Angular Fulde-Ferrell-Larkin-Ovchinnikov state in cold fermion gases in a toroidal trap
arXiv:0902.2275 · doi:10.1103/PhysRevB.80.220510
Abstract
We study the possibility of angular Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, in which the rotation symmetry is spontaneously broken, in population imbalanced fermion gases near the BCS-BEC crossover. We investigate the superfluid gases at low temperatures on the basis of the Bogoliubov-de Gennes equation, and examine the stability against thermal fluctuations using the T-matrix approach beyond the local-density approximation (LDA). We find that the angular FFLO state is stabilized in the gases confined in the toroidal trap but not in the harmonic trap. The angular FFLO state is stable near the BCS-BEC crossover owing to the formation of pseudogap. Spatial dependences of number density and local population imbalance are shown for an experimental test.
final version for publication in Phys. Rev. B Rapid Communication
References in corpus (26)
- Theory of ultracold Fermi gases
- Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas
- Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
- Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
- Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
- Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
- Deformation of a Trapped Fermi Gas with Unequal Spin Populations
- Attractive Fermi gases with unequal spin populations in highly elongated traps
- Phase diagram of a strongly interacting polarized Fermi gas in one dimension
- Finite temperature phase diagram of a polarised Fermi condensate
- Pairing states of a polarized Fermi gas trapped in a one-dimensional optical lattice
- Strongly interacting Fermi gases with density imbalance
- Quasi-one-dimensional polarized Fermi superfluids
- Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi Condensates
- Generic Phase Diagram of Fermion Superfluids with Population Imbalance
- Trapped Fermions across a Feshbach resonance with population imbalance
- Pairing of a trapped resonantly-interacting fermion mixture with unequal spin populations
- Larkin-Ovchinnikov state in resonant Fermi gas
- Mean field thermodynamics of a spin-polarized spherically trapped Fermi gas at unitarity
- Pair correlations of a spin-imbalanced Fermi gas on two-leg ladders
- On the Fulde-Ferrell State in Spatially Isotropic Superconductors
- Imbalanced Superfluid Phase of a Trapped Fermi Gas in the BCS-BEC Crossover Regime
- Effective low-dimensional Hamiltonian for strongly interacting atoms in a transverse trap
- Localization and Superconductivity in Doped Semiconductors
- Superconducting Fluctuation and Pseudogap in Disordered Short Coherence Length Superconductor
- Imbalanced superfluid state in an annular disk
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- Coexistence of superconductivity and incommensurate magnetic order
- Spatially Modulated Vacua in a Lorentz-invariant Scalar Field Theory
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- Critical behaviour in one dimension: unconventional pairing, phase separation, BEC-BCS crossover and magnetic Lifshitz transition
- Spin imbalance effect on Larkin-Ovchinnikov-Fulde-Ferrel state
- Rotating Fulde-Ferrell-Larkin-Ovchinnikov state in cold Fermi gases
- Critical Temperature Enhancement of Topological Superconductors: A Dynamical Mean Field Study
- Superfluidity of a spin-imbalanced Fermi gas in a three-dimensional optical lattice
- Radial Fulde-Ferrell-Larkin-Ovchinnikov state in a population-imbalanced Fermi gas
- Quantum engineering of Majorana quasiparticles in one-dimensional optical lattices
- Polarized superfluid state in a three-dimensional fermionic optical lattice
- Spin-imbalanced ultracold Fermi gases in a two-dimensional array of tubes
- Unconventional superconductivity in iron-base superconductors in a three-band model
- Stability of FFLO states in optical lattices with bilayer structure
- Triplet-odd pairing in finite nuclear systems: Even-even singly closed nuclei
- Collective excitations of an imbalanced fermion gas in a 1D optical lattice
- Anomalous Flux Quantization in the Spin-Imbalanced Attractive Hubbard Ring