Stability of vortex lines in liquid 3He-4He mixtures at zero temperature

Details Stability of vortex lines in liquid 3He-4He mixtures at zero temperature Stability of vortex lines in liquid 3He-4He mixtures at zero temperature

1996-09-18

arxiv.org/abs/cond-mat/9609169v1

Phys. Rev. 55 (1997) 11092

Physics

Condensed Matter

Typeset using Revtex, 9 pages and 5 Postscript figures

Scientific paper

10.1103/PhysRevB.55.11092

At low temperatures and 3He concentrations below 6.6 %, there is experimental evidence about the existence in liquid helium mixtures, of stable vortices with 3He-rich cores. When the system is either supersaturated or submitted to a tensile strength, vortices lose stability becoming metastable and eventually completely unstable, so that their cores freely expand. Within a density functional approach, we have determined the pressure-3He concentration curve along which this instability appears at zero temperature.

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