Universal lower limit on vortex creep in superconductors
نویسندگان
چکیده
منابع مشابه
Glassy properties of vortex creep in superconductors
We study a model for the dynamics of vortices in type II superconductors. In particular, we discuss glassy properties and “aging” in magnetic creep. At low temperatures a crossover point is found, Tg, where relaxation times seem to diverge á la Vogel-Tamman-Fulcher. Magnetic creep changes by crossing Tg: above Tg power law creep is found asymptotically followed by stretched exponential saturati...
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The vortex state at the lower critical field, Hc1, in clean anisotropic superconductors placed in an external field tilted with respect to the axis of anisotropy (c-axis) is considered assuming two possible arrangements: dilute vortex-lines or dilute vortex-line chains. By minimizing the Gibbs free energies in the London limit for each possibility we obtain the corresponding lower critical fiel...
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ژورنال
عنوان ژورنال: Nature Materials
سال: 2017
ISSN: 1476-1122,1476-4660
DOI: 10.1038/nmat4840