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

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• 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
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• Small mass- and trap-imbalanced two-component Fermi systems
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• Low temperature properties of the fermionic mixtures with mass imbalance in optical lattice
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• Lifetime of Feshbach dimers in a Fermi-Fermi mixture of ${}^6$Li and ${}^{40}$K
• Quartet Superfluid in Two-dimensional Mass-imbalanced Fermi Mixtures
• Hetero pairing and component-dependent pseudogap phenomena in an ultracold Fermi gas with mass imbalance
• Phase diagram of the asymmetric Hubbard model and an entropic chromatographic method for cooling cold fermions in optical lattices
• Orbital selective crossover and Mott transitions in an asymmetric Hubbard model of cold atoms in optical lattices
• Phase diagrams of Fermi gases in a trap with mass and population imbalances at finite temperature
• Trap-imbalanced fermion mixtures
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• Dynamical properties of a few mass-imbalanced ultra-cold fermions confined in a double-well potential
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• Triplet pair amplitude in a trapped $s$-wave superfluid Fermi gas with broken spin rotation symmetry. II. Three dimensional continuum case
• Unitary Fermi gas in the epsilon expansion
• Phase diagram for the trapped p-wave fermionic superfluid with population imbalance
• Breached pair superfluidity: a brief review