Resonant pairing between Fermions with unequal masses

Abstract

We study the pairing between Fermions of different masses, especially at the unitary limit. At equal populations, the thermodynamic properties are identical with the equal mass case provided an appropriate rescaling is made. At unequal populations, for sufficiently light majority species, the system does not phase separate. For sufficiently heavy majority species, the phase separated normal phase have a density larger than that of the superfluid. For atoms in harmonic traps, the density profiles for unequal mass Fermions can be drastically different from their equal-mass counterparts.

10 pages, 4 figures

References in corpus (5)

• Vortices and Superfluidity in a Strongly Interacting Fermi Gas
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Phase diagram of a cold polarized Fermi gas
• Two-species fermion mixtures with population imbalance
• Asymmetric Fermi superfluid in a harmonic trap

Cited by in corpus (23)

• Theory of ultracold Fermi gases
• Quantum degenerate two-species Fermi-Fermi mixture coexisting with a Bose-Einstein condensate
• Ultracold Heteronuclear Fermi-Fermi Molecules
• Energetics and Structural Properties of Trapped Two-Component Fermi Gases
• Polarized Fermi condensates with unequal masses: Tuning the tricritical point
• BEC-BCS Crossover of a Trapped Two-Component Fermi Gas with Unequal Masses
• Heavy-Light Fermion Mixtures at Unitarity
• Universal Fermi Gas with Two- and Three-Body Resonances
• Mean field thermodynamics of a spin-polarized spherically trapped Fermi gas at unitarity
• Superfluid pairing between fermions with unequal masses
• Fermi-Fermi Mixtures in the Strong Attraction Limit
• Co-existence and shell structures of several superfluids in trapped three-component Fermi mixtures
• 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
• Interferometric probe of paired states
• Pressure induced FFLO instability in multi-band superconductors
• Trap-imbalanced fermion mixtures
• Vortex core states in superfluid Fermi-Fermi mixtures with unequal masses
• Temperature Effects in a Fermi Gas with Population Imbalance
• Heteronuclear quantum gas mixtures
• Phase diagram of asymmetric Fermi gas across Feshbach resonance
• Unitary Fermi gas in the epsilon expansion