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

D. Jezek·M. Guilleumas·M. Pi·M. Barranco
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Abstract

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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D. Jezek, M. Guilleumas, M. Pi, M. Barranco. 1996-09-18. Stability of vortex lines in liquid 3He-4He mixtures at zero temperature. https://doi.org/10.1103/physrevb.55.11092

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