Abstract
In high-T c superconductors thermally activated depinning of the flux lines leads to the appearance of a finite resistivity when a magnetic field is applied. At low current densities this corresponds to a finite diffusivity of the magnetic flux, whose exponential temperature dependence explains a large variety of experiments without having to introduce concepts like flux-line lattice melting or phase transitions. Nonlocal elasticity and material anisotropy soften the flux-line lattice and strongly enhance its thermal fluctuations and pinning-caused distortions.
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Brandt, E.H. (1991). Thermally Activated Depinning of Vortices in High-T c Superconductors. In: Ashkenazi, J., Barnes, S.E., Zuo, F., Vezzoli, G.C., Klein, B.M. (eds) High-Temperature Superconductivity. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3338-2_46
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DOI: https://doi.org/10.1007/978-1-4615-3338-2_46
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