Vortex lattice in spin-imbalanced unitary Fermi gas
arXiv:2109.00427 · doi:10.1103/PhysRevA.104.053322
Abstract
We investigate the properties of a spin-imbalanced and rotating unitary Fermi gas. Using a density functional theory (DFT), we provide insight into states that emerge as a result of a competition between Abrikosov lattice formation, spatial phase separation and the emergence of Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state. A confrontation of the experimental data [M. Zwierlein et al., Science 311, 492 (2006)] with theoretical predictions provides a remarkable qualitative agreement. In case of gas confined in a harmonic trap, the phase separation into a superfluid core populated by the Abrikosov lattice and a spin-polarized corona is the dominant process. Changing confinement to a box-like trap, reverts the spatial location of the component: gas being in the normal state is surrounded by superfluid threaded by quantum vortices. The vortex lattice no longer exhibits the triangular symmetry, and emergence of exotic geometries may be an indirect signature of the FFLO-like state formation in the system.
arXiv comment10 pages, 7 figures
References in corpus (57)
- Proximity effects in superconductor-ferromagnet heterostructures
- Vortices and Superfluidity in a Strongly Interacting Fermi Gas
- Pairing and Phase Separation in a Polarized Fermi Gas
- Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
- Bose-Einstein condensation of atoms in a uniform potential
- Spin-Imbalance in a One-Dimensional Fermi Gas
- Magnetars: the physics behind observations
- Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
- The Equation of State of a Low-Temperature Fermi Gas with Tunable Interactions
- Phase diagram of a two-component Fermi gas with resonant interactions
- Collective Oscillations of an Imbalanced Fermi Gas: Axial Compression Modes and Polaron Effective Mass
- Models of Pulsar Glitches
- Emergence of coherence in a uniform quasi-two-dimensional Bose gas
- Homogeneous Atomic Fermi Gases
- Emergence of a Turbulent Cascade in a Quantum Gas
- Imbalanced Feshbach-resonant Fermi gases
- The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
- A Unitary Fermi Supersolid: The Larkin-Ovchinnikov Phase
- Trapped fermions with density imbalance in the BEC limit
- Broyden's Method in Nuclear Structure Calculations
- Phases of dense matter in compact stars
- Imbalanced Fermi Gases at Unitarity
- Quantized Superfluid Vortex Rings in the Unitary Fermi Gas
- Vortex states in superconductors with strong Pauli-paramagnetic effect
- The Vortex State in a Strongly Coupled Dilute Atomic Fermionic Superfluid
- Generation and Dynamics of Quantized Vortices in a Unitary Fermi Superfluid
- Local Density Approximation for Systems with Pairing Correlations
- Dynamics of the BCS-BEC crossover in a degenerate Fermi gas
- Topological Structure of a Vortex in Fulde-Ferrell-Larkin-Ovchinnikov State
- Superfluid Expansion of a Strongly Interacting Fermi Gas
- Spin-polarized neutron matter: Critical unpairing and BCS-BEC precursor
- Vortex state in a Fulde-Ferrell-Larkin-Ovchinnikov superconductor based on the quasiclassical theory
- Life Cycle of Superfluid Vortices and Quantum Turbulence in the Unitary Fermi Gas
- A Two-dimensional Superconductor in a Tilted Magnetic Field - new states with finite Cooper-pair momentum
- Time-Dependent Density Functional Theory for Fermionic Superfluids: from Cold Atomic Gases, to Nuclei and Neutron Stars Crust
- Suppressed solitonic cascade in spin-imbalanced superfluid Fermi gas
- Vortex Lattice Structure of Fulde-Ferrell-Larkin-Ovchinnikov Superconductors
- Phase Diagram of a Strongly Interacting Spin-Imbalanced Fermi Gas
- Vortex Core Structure in Neutral Fermion Superfluids with Population Imbalance
- BCS-BEC crossovers and unconventional phases in dilute nuclear matter
- Visualization of vortex bound states in polarized Fermi gases at unitarity
- Crossover from the vortex state to the Fulde-Ferrell-Larkin-Ovchinnikov state in quasi-two-dimensional superconductors
- Spin-polarized droplets in the unitary Fermi gas
- Phase diagram of dilute nuclear matter: Unconventional pairing and the BCS-BEC crossover
- Exotic superfluid states of lattice fermions in elongated traps
- Ring solitons and soliton sacks in imbalanced fermionic systems
- Vortex arrays in neutral trapped Fermi gases throughout the BCS-BEC crossover
- Theory of pairing symmetry in Fulde-Ferrell-Larkin-Ovchinnikov vortex state and vortex lattice
- Competition between Normal Superfluidity and Larkin-Ovchinnikov Phases of Polarized Fermi Gases in Elongated Traps
- FFLO Vortex Lattice States in Cold Fermionic-Atom Systems
- Probing Fermionic Condensates by Fast-Sweep Projection onto Feshbach Molecules
- Spin-polarized vortices with reversed circulation
- Unitary polarized Fermi gas under adiabatic rotation
- Radial Fulde-Ferrell-Larkin-Ovchinnikov state in a population-imbalanced Fermi gas
- Microscopic Eilenberger theory of Fulde-Ferrell-Larkin-Ovchinnikov states in the presence of vortices
- Multiple-quantized vortices in rotating LOFF state of ultracold Fermi superfluid gas
- Bound states in a superfluid vortex: A detailed study along the BCS-BEC crossover