Superfluid shells for trapped fermions with mass and population imbalance

Abstract

We map out the phase diagram of strongly interacting fermions in a potential trap with mass and population imbalance between the two spin components. As a unique feature distinctively different from the equal-mass case, we show that the superfluid here forms a shell structure which is not simply connected in space. Different types of normal states occupy the trap regions inside and outside this superfluid shell. We calculate the atomic density profiles, which provide an experimental signature for the superfluid shell structure.

4 pages, 3 figures

References in corpus (4)

• Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
• Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
• Phase diagram of a polarized Fermi gas across a Feshbach resonance in a potential trap
• Detecting the breached pair phase in a polarized ultracold Fermi gas

Cited by in corpus (16)

• 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
• Quantum phase diagram of fermion mixtures with population imbalance in one-dimensional optical lattices
• Fermi-Fermi Mixtures in the Strong Attraction Limit
• Competing superfluid and density-wave ground-states of fermionic mixtures with mass imbalance in optical lattices
• 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
• Trap-imbalanced fermion mixtures
• Vortex core states in superfluid Fermi-Fermi mixtures with unequal masses
• Ground-state properties of fermionic mixtures with mass imbalance in optical lattices
• Temperature Effects in a Fermi Gas with Population Imbalance
• Heteronuclear fermionic superfluids with spin degrees of freedom
• Phase diagram of asymmetric Fermi gas across Feshbach resonance
• Unitary Fermi gas in the epsilon expansion