Superfluidity of spin-polarized 6Li

Details Superfluidity of spin-polarized 6Li Superfluidity of spin-polarized 6Li

1995-08-18

arxiv.org/abs/cond-mat/9508079v1

Physics

Condensed Matter

4 pages of ReVTeX and 2 uuencoded figures. Submitted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.76.10

We study the prospects for observing superfluidity in a spin-polarized atomic gas of $^6$Li atoms, using state-of-the-art interatomic potentials. We determine the spinodal line and show that a BCS transition to the superfluid state can indeed occur in the (meta)stable region of the phase diagram if the densities are sufficiently low. Moreover, for a total density of $10^{12}~cm^{-3}$, which still fulfills this requirement, we find a critical temperature of only $29~nK$. We also discuss the stability of the gas due to exchange and dipolar relaxation and conclude that the prospects for observing superfluidity in a magnetically trapped atomic $^6$Li gas are particularly promising for magnetic bias fields larger than $10~T$.

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