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  • Critical currents  (1)
  • 1990-1994  (1)
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  • 1990-1994  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Flux motion by quantum tunnelling in high-T c superconductors (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1925-1932 
    Details
    ISSN: 0392-6737
    Keywords: Flux pinning ; flux motion ; fluxon-defect interactions ; Critical currents ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The results of low-temperature magnetic-relaxation experiments in TlBaCaCuO superconductors (2212 and 2223 phase) are reported. They give evidence of a crossover from a thermally activated regime of flux motion to a nonthermally activated one. The magnetic-relaxation rate is found to become temperature independent below ≅7K and ≅3K, for the 2212 and 2223 phase, respectively. Its value compares well with that predicted by the theories of flux motion by quantum tunnelling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462195
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