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

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At low temperatures and He concentrations below -6.6%, there is experimental evidence about the existence in liquid helium mixtures of stable vortices with He-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- He concentration curve along which this instability appears at zero temperature.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.55.11092

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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