Two-species fermion mixtures with population imbalance
arXiv:cond-mat/0604184 · doi:10.1103/PhysRevLett.97.100404
Abstract
We analyze the phase diagram of uniform superfluidity for two-species fermion mixtures from the Bardeen-Cooper-Schrieffer (BCS) to Bose-Einstein condensation (BEC) limit as a function of the scattering parameter and population imbalance. We find at zero temperature that the phase diagram of population imbalance versus scattering parameter is asymmetric for unequal masses, having a larger stability region for uniform superfluidity when the lighter fermions are in excess. In addition, we find topological quantum phase transitions associated with the disappearance or appearance of momentum space regions of zero quasiparticle energies. Lastly, near the critical temperature, we derive the Ginzburg-Landau equation, and show that it describes a dilute mixture of composite bosons and unpaired fermions in the BEC limit.
4 pages with 3 figures, accepted version to PRL
References in corpus (20)
- Observation of resonance condensation of fermionic atom pairs
- Pairing and Phase Separation in a Polarized Fermi Gas
- Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
- Experimental Study of the BEC-BCS Crossover Region in Lithium 6
- Evidence for Superfluidity in a Resonantly Interacting Fermi Gas
- Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
- Fermionic atoms in a 3D optical lattice: Observing Fermi-surfaces, dynamics and interactions
- Molecular Probe of Pairing in the BEC-BCS Crossover
- Interior Gap Superfluidity
- BEC-BCS crossover in "magnetized" Feshbach-resonantly paired superfluids
- Phase separation in asymmetrical fermion superfluids
- Asymmetric Two-component Fermion Systems in Strong Coupling
- Direct Imaging of Spatially Modulated Superfluid Phases in Atomic Fermion Systems
- Superfluid stability in BEC-BCS crossover
- Strongly interacting Fermi gases with density imbalance
- Phase diagram of a cold polarized Fermi gas
- Profiles of near-resonant population-imbalanced trapped Fermi gases
- Trapped fermions with density imbalance in the BEC limit
- Diatomic molecules in ultracold Fermi gases - Novel composite bosons
- Trapped Fermions across a Feshbach resonance with population imbalance
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- Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach resonances and scattering properties of 6Li and 40K
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- The BCS-BEC crossover: From ultra-cold Fermi gases to nuclear systems
- Imbalanced Feshbach-resonant Fermi gases
- Finite temperature phase diagram of a polarised Fermi condensate
- Ultra-cold Polarized Fermi Gases
- Phase separation in a polarized Fermi gas at zero temperature
- Low-energy three-body dynamics in binary quantum gases
- Fulde-Ferrell-Larkin-Ovchinnikov states in one-dimensional spin-polarized ultracold atomic Fermi gases
- Stability of spin-orbit coupled Fermi gases with population imbalance
- Collisional Stability of 40K Immersed in a Strongly Interacting Fermi Gas of 6Li
- Evolution from BCS to BEC superfluidity in the presence of spin-orbit coupling
- Imbalanced Fermi Gases at Unitarity
- Zero Temperature Thermodynamics of Asymmetric Fermi Gases at Unitarity
- Energetics and Structural Properties of Trapped Two-Component Fermi Gases
- Polarized Fermi condensates with unequal masses: Tuning the tricritical point
- Topological superfluid in a trapped two-dimensional polarized Fermi gas with spin-orbit coupling
- Route to Observable Fulde-Ferrell-Larkin-Ovchinnikov Phases in 3D Spin-Orbit Coupled Degenerate Fermi Gases
- Effects of density imbalance on the BCS-BEC crossover in semiconductor electron-hole bilayers
- Probing the Interface of a Phase-Separated State in a Repulsive Bose-Fermi Mixture
- BEC-BCS Crossover of a Trapped Two-Component Fermi Gas with Unequal Masses
- All-optical production of a degenerate mixture of 6Li and 40K and creation of heteronuclear molecules
- Finite temperature phase diagram of a spin-polarized ultracold Fermi gas in a highly elongated harmonic trap
- Superfluidity at the BEC-BCS crossover in two-dimensional Fermi gases with population and mass imbalance
- Feshbach resonances in the 6Li-40K Fermi-Fermi mixture: Elastic versus inelastic interactions
- Resonant pairing between Fermions with unequal masses
- Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixture
- Competing superfluid orders in spin-orbit coupled fermionic cold atom optical lattices
- Universal Fermi Gas with Two- and Three-Body Resonances
- Mean field thermodynamics of a spin-polarized spherically trapped Fermi gas at unitarity
- Mixtures of ultracold fermions with unequal masses
- Accurate Determination of the Dynamical Polarizability of Dysprosium
- Quantum phase diagram of fermion mixtures with population imbalance in one-dimensional optical lattices
- Phase Diagram of Cold Polarized Fermi Gas in Two Dimensions
- Universal four-body states in heavy-light mixtures with positive scattering length
- Superfluid pairing between fermions with unequal masses
- Fermi-Fermi Mixtures in the Strong Attraction Limit
- Two-band superfluidity from the BCS to the BEC limit
- Competing superfluid and density-wave ground-states of fermionic mixtures with mass imbalance in optical lattices
- Finite temperature effective field theory and two-band superfluidity in Fermi gases
- Imbalanced Fermi superfluid in a one-dimensional optical potential
- Imbalanced Superfluid Phase of a Trapped Fermi Gas in the BCS-BEC Crossover Regime
- Thermodynamics of the two-component Fermi gas with unequal masses at unitarity
- Superfluid and insulating phases of fermion mixtures in optical lattices
- Zero-temperature equation of state of mass-imbalanced resonant Fermi gases
- Asymmetric Fermi superfluid with different atomic species in a harmonic trap
- Chandrasekhar-Clogston limit and phase separation in Fermi mixtures at Unitarity
- Small mass- and trap-imbalanced two-component Fermi systems
- Comment on "Superfluid stability in the BEC-BCS crossover"
- Realization of a Cold Mixture of Fermionic Chromium and Lithium Atoms
- Excitation properties and effects of mass imbalance in the BCS-BEC crossover regime of an ultracold Fermi gas
- Theory of the Normal/Superfluid interface in population imbalanced Fermi gases
- Resonant enhancement of the FFLO-state in 3D by a one-dimensional optical potential
- Quantum phases of Fermi-Fermi mixtures in optical lattices
- Low temperature properties of the fermionic mixtures with mass imbalance in optical lattice
- Finite-Temperature Behavior of an Inter-species Fermionic Superfluid with Population Imbalance
- Lifetime of Feshbach dimers in a Fermi-Fermi mixture of Li and K
- Stability of Sarma phases in density imbalanced electron-hole bilayer systems
- Universal description of the rotational-vibrational spectrum of three particles with zero-range interactions
- Hetero pairing and component-dependent pseudogap phenomena in an ultracold Fermi gas with mass imbalance
- Dimer-atom scattering between two identical fermions and a third particle
- Double-degenerate Fermi mixtures of Li and Cr atoms
- Spin-polarized Fermi superfluids as Bose-Fermi mixtures
- Spinodal decomposition in polarised Fermi superfluids
- Universal description of three two-component fermions
- Cooper pairing and BCS-BEC evolution in mixed-dimensional Fermi gases
- The Trapped Polarized Fermi Gas at Unitarity
- Phase diagrams of Fermi gases in a trap with mass and population imbalances at finite temperature
- Stability of superfluid phases in the 2D Spin-Polarized Attractive Hubbard Model
- Dimensional Crossover in a Spin-imbalanced Fermi gas
- Trap-imbalanced fermion mixtures
- Formation of Cooper pairs between conduction and localized electrons in heavy-fermion superconductors
- Temperature Effects in a Fermi Gas with Population Imbalance
- Quantum condensation in electron-hole bilayers with density imbalance
- Phase separation in optical lattices in a spin-dependent external potential
- Vortex core states in superfluid Fermi-Fermi mixtures with unequal masses
- Heteronuclear fermionic superfluids with spin degrees of freedom
- Unconventional interaction between vortices in a polarized Fermi gas
- Heteronuclear quantum gas mixtures
- Thermal transitions, pseudogap behavior and BCS-BEC crossover in Fermi-Fermi mixtures
- Spin-imbalanced ultracold Fermi gases in a two-dimensional array of tubes
- Competition between the Fulde-Ferrell-Larkin-Ovchinnikov phase and the BCS phase in the presence of an optical potential
- Analytical solutions for two heteronuclear atoms in a ring trap
- Superfluidity in density imbalanced bilayers of dipolar fermions
- Mass-Imbalanced Superconductivity in Effective Two-Channel Kondo Lattice
- Mass-imbalanced Fermi gases with spin-orbit coupling
- Stability of the Breached Pair State for a Two-species Fermionic System in the Presence of Feshbach Resonance
- Pairing imbalance in BCS-BEC crossover of inhomogeneous three-component Fermi-gas in two dimensions
- Superfluid density reduction and spin-imbalanced pairing in a fermionic superfluid due to dynamical boson exchange
- Phase diagram of asymmetric Fermi gas across Feshbach resonance
- Collective excitation and stability of flow-induced gapless Fermi superfluids
- Pairing properties of an odd-frequency superfluid Fermi gas
- Dipole-Mode Spectrum and Hydrodynamic Crossover in a Resonantly Interacting Two-Species Fermion Mixture
- Fulde-Ferrell states in unequally charged Fermi gases
- Unitary Fermi gas in the epsilon expansion
- Trap and population imbalanced two-component Fermi gas in the BEC limit
- Pair condensation of polarized fermions in the BCS-BEC crossover
- Broad Feshbach resonance with a large background scattering length in a fermionic atom-molecule mixture
- Flow and critical velocity of an imbalanced Fermi gas through an optical potential
- Exploring Exotic Superfluidity of Polarized Ultracold Fermions in Optical Lattices
- Variational wavefunction for multi-species spinful fermionic superfluids and superconductors
- Bosonic binary mixtures with Josephson-type interactions