Vortex-Core Structure in Neutral Fermion Superfluids with Population Imbalance
Abstract
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 the 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.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 2006
- DOI:
- 10.1103/PhysRevLett.97.180407
- arXiv:
- arXiv:cond-mat/0607147
- Bibcode:
- 2006PhRvL..97r0407T
- Keywords:
-
- 05.30.Fk;
- 03.75.Hh;
- 03.75.Ss;
- 47.32.-y;
- Fermion systems and electron gas;
- Static properties of condensates;
- thermodynamical statistical and structural properties;
- Degenerate Fermi gases;
- Vortex dynamics;
- rotating fluids;
- Condensed Matter - Superconductivity
- E-Print:
- 5 pages, 5 figures, replaced by the version to appear in PRL