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.
@article{arxiv.cond-mat/9609169,
title = {Stability of vortex lines in liquid 3He-4He mixtures at zero temperature},
author = {D. Jezek and M. Guilleumas and M. Pi and M. Barranco},
journal= {arXiv preprint arXiv:cond-mat/9609169},
year = {2009}
}
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Typeset using Revtex, 9 pages and 5 Postscript figures