Resonant pairing between Fermions with unequal masses

Details Resonant pairing between Fermions with unequal masses Resonant pairing between Fermions with unequal masses

2006-04-25

arxiv.org/abs/cond-mat/0604572v2

Phys. Rev. B 74, 224504 (2006)

Physics

Condensed Matter

Superconductivity

10 pages, 4 figures

Scientific paper

10.1103/PhysRevB.74.224504

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.

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