Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2004-08-21
Phys. Rev. Lett. 94, 090402 (2005)
Physics
Condensed Matter
Other Condensed Matter
4 pages, 1 figure
Scientific paper
10.1103/PhysRevLett.94.090402
We study the pairing of Fermi gases near the scattering resonance of the $\ell\neq 0$ partial wave. Using a model potential which reproduces the actual two-body low energy scattering amplitude, we have obtained an analytic solution of the gap equation. We show that the ground state of $\ell=1$ and $\ell=3$ superfluid are orbital ferromagnets with pairing wavefunctions $Y_{11}$ and $Y_{32}$ respectively. For $\ell=2$, there is a degeneracy between $Y_{22}$ and a "cyclic state". Dipole energy will orient the angular momentum axis. The gap function can be determined by the angular dependence of the momentum distribution of the fermions.
Diener Roberto B.
Ho Tin-Lun
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