Vortex Core Structure in Neutral Fermion Superfluids with Population Imbalance

Details Vortex Core Structure in Neutral Fermion Superfluids with Population Imbalance Vortex Core Structure in Neutral Fermion Superfluids with Population Imbalance

2006-07-06

arxiv.org/abs/cond-mat/0607147v2

Phys. Rev. Lett. 97, 180407 (2006)

Physics

Condensed Matter

Superconductivity

5 pages, 5 figures, replaced by the version to appear in PRL

Scientific paper

10.1103/PhysRevLett.97.180407

Quantized vortex core structure is theoretically investigated in Fermion superfluids with population imbalance for two atom species of neutral atom clouds near a Feshbach resonance. In contrast with vortex core in balance case where the quantum depletion makes a vortex visible through the density profile measurement, the vortex core is filled in and becomes less visible because the quantized discrete bound states are occupied exclusively by the majority species. Yet it is shown that the core can be visible through the minority density profile experiment using phase contrast imaging, revealing an interesting opportunity to examine low-lying Fermionic core bound states unexplored so far.

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