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Journal of Low Temperature Physics

, Volume 109, Issue 3–4, pp 625–639 | Cite as

Some Properties of a Spin-1 Fermi Superfluid: Application to Spin-Polarized 6Li

  • A. G. K. Modawi
  • A. J. Leggett
Article

Abstract

We discuss some of the unusual characteristics of a Fermi superfluid formed by Cooper pairing in a system, such as spin-polarized 6Li, which possesses triple nuclear spin degeneracy. In particular we show (a) that the “ naive” BCS expression for the transition temperature is (unlike in the usual spin-1/2 case) exact in the low-density limit, and (b) that there must always be a gapless branch of the excitation spectrum even for s-wave pairing, so that the normal density is nonzero at T = 0.

Keywords

Transition Temperature Magnetic Material Excitation Spectrum Normal Density Nuclear Spin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, Inc. 1997

Authors and Affiliations

  • A. G. K. Modawi
    • 1
  • A. J. Leggett
    • 1
  1. 1.Department of PhysicsUniversity of IllinoisUrbanaUSA

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