Sarma Phase in Trapped Unbalanced Fermi Gases

Abstract

We consider a trapped unbalanced Fermi gas at nonzero temperatures where the superfluid Sarma phase is stable. We determine in particular the phase boundaries between the superfluid, normal, and phase separated regions of the trapped unbalanced Fermi mixture. We show that the physics of the Sarma phase is sufficient to understand the recent observations of Zwierlein et al. [Science 311, 492 (2006); Nature 442, 54 (2006)] and indicate how the apparent contradictions between this experiment and the experiment of Partridge et al. [Science 311, 503 (2006)] may be resolved.

Replaced with published version; 4 pages, 3 figures

References in corpus (13)

• Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
• Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
• Strongly interacting Fermi gases with density imbalance
• Generic Phase Diagram of Fermion Superfluids with Population Imbalance
• Profiles of near-resonant population-imbalanced trapped Fermi gases
• Trapped fermions with density imbalance in the BEC limit
• Trapped Fermions across a Feshbach resonance with population imbalance
• Surface Tension in Unitary Fermi Gases with Population Imbalance
• Pairing of a trapped resonantly-interacting fermion mixture with unequal spin populations
• Intermediate temperature superfluidity in an atomic Fermi gas with population imbalance
• Finite temperature effects in trapped Fermi gases with population imbalance
• Ultracold polarized Fermi gas at intermediate temperatures
• Stability of trapped fermionic gases with attractive interactions

Cited by in corpus (74)

• Theory of ultracold Fermi gases
• Phase diagram of a two-component Fermi gas with resonant interactions
• Fermion Interactions and Universal Behavior in Strongly Interacting Theories
• 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
• Fluctuations and phase transitions in Larkin-Ovchinnikov liquid crystal states of population-imbalanced resonant Fermi gas
• Exact quantum Monte Carlo study of one dimensional trapped fermions with attractive contact interactions
• Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi Condensates
• Fulde-Ferrell-Larkin-Ovchinnikov states in one-dimensional spin-polarized ultracold atomic Fermi gases
• Exact Numerical Study of Pair Formation with Imbalanced Fermion Populations
• Finite temperature phase diagram of a polarized Fermi gas in an optical lattice
• Imbalanced Fermi Gases at Unitarity
• Polarized Fermi condensates with unequal masses: Tuning the tricritical point
• Polarization Measurements and the Pairing Gap in the Universal Regime
• Renormalization Group Theory for the Imbalanced Fermi Gas
• Population and mass imbalance in atomic Fermi gases
• Superfluid phase diagrams of trapped Fermi gases with population imbalance
• Mean field thermodynamics of a spin-polarized spherically trapped Fermi gas at unitarity
• Quantum mixtures of ultracold gases of neutral atoms
• Quantum phase diagram of fermion mixtures with population imbalance in one-dimensional optical lattices
• Lifshitz Point in the Phase Diagram of Resonantly Interacting ${}^{6}Li$-${}^{40}K$ Mixtures
• The role of interactions in spin-polarised atomic Fermi gases at unitarity
• Phase structure of spin-imbalanced unitary Fermi gases
• Stability conditions and phase diagrams for two component Fermi gases with population imbalance
• Thermodynamics of ultracold trapped gases. Generalized mechanical variables, equation of state and heat capacity
• Normal-Superfluid Interface Scattering For Polarized Fermion Gases
• BCS-BEC crossover and the disappearance of FFLO-correlations in a spin-imbalanced, one-dimensional Fermi gas
• Imbalanced Superfluid Phase of a Trapped Fermi Gas in the BCS-BEC Crossover Regime
• Pair formation and collapse in imbalanced Fermion populations with unequal masses
• Finite temperature QMC study of the one-dimensional polarized Fermi gas
• Theory of Superfluids with Population Imbalance: Finite Temperature and BCS-BEC Crossover Effects
• Trapped fermionic clouds distorted from the trap shape due to many-body effects
• Spin-polarized droplets in the unitary Fermi gas
• Quantum liquid-crystal order in resonant atomic gases
• Asymmetric Fermi superfluid with different atomic species in a harmonic trap
• Non-BCS superfluidity in trapped ultracold Fermi gases
• 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
• Stability of Sarma phases in density imbalanced electron-hole bilayer systems
• Sarma phase in relativistic and non-relativistic systems
• Spinodal decomposition in polarised Fermi superfluids
• Normal-Superfluid Interface for Polarized Fermion Gases
• Monte Carlo studies of extensions of the Blume-Emery-Griffiths model
• Antiferromagnetic Order of Repulsively Interacting Fermions on Optical lattices
• The Trapped Polarized Fermi Gas at Unitarity
• Dynamics of spin-polarized impurity in ultracold Fermi gas
• Spin-Imbalanced Fermi Superfluidity in a Lieb Lattice Hubbard Model
• Interacting Preformed Cooper Pairs in Resonant Fermi Gases
• Phases of spin- and mass-imbalanced ultracold Fermi gases in harmonic traps
• Out-of-Equilibrium Spin Transport in Mesoscopic Superconductors
• Dimensional Crossover in a Spin-imbalanced Fermi gas
• Pairing patterns in polarized unitary Fermi gases above the superfluid transition
• Polarized superfluids near their tricritical point
• Temperature Effects in a Fermi Gas with Population Imbalance
• Effective potential and quantum criticality for imbalanced Fermi mixtures
• A Mean Field Analysis of Pairing in Asymmetric Fermi Systems at Finite Temperature
• BCS-BEC Crossover in Mix-dimensional Fermi Gases
• Ground State Properties of an Asymmetric Hubbard Model for Unbalanced Ultracold Fermionic Quantum Gases
• Competition between the Fulde-Ferrell-Larkin-Ovchinnikov phase and the BCS phase in the presence of an optical potential
• Pairing in Asymmetrical Fermi Systems with Intra- and Inter-Species Correlations
• Stability of the Breached Pair State for a Two-species Fermionic System in the Presence of Feshbach Resonance
• Induced superfluidity of imbalanced Fermi gases near unitarity
• Topological Phase Separation In Trapped Ultracold Fermionic Gases
• Thermodynamics of Trapped Imbalanced Fermi Gases at Unitarity
• Pairing imbalance in BCS-BEC crossover of inhomogeneous three-component Fermi-gas in two dimensions
• Signatures of Fermion Pairing with Unconventional Symmetry around BCS-BEC Crossover in a Quasi-2D Lattice
• Trap and population imbalanced two-component Fermi gas in the BEC limit
• Exploring Exotic Superfluidity of Polarized Ultracold Fermions in Optical Lattices
• Isentropic Curves at Magnetic Phase Transitions
• Interplay of mass imbalance and frustration in correlated band insulators
• A Fortran 90 program to solve the Hartree-Fock equations for interacting spin-1/2 Fermions confined in Harmonic potentials
• Connection between the semiconductor--superconductor transition and the spin-polarized superconducting phase in the honeycomb lattice