Flux flow resistivity and upper critical field in ideal type II amorphous superconductors View Full Text


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Article Info

DATE

1984-01

AUTHORS

S. J. Poon, K. M. Wong

ABSTRACT

Flux flow resistivity ρf and upper critical fieldHc2 of ideal type II amorphous bulk supercbnductors Zr3Ni and Zr3Rh on both as-quenched and thermally relaxed states have been studied. It is found that thermal annealing does not change the temperature dependence ofHc2 in homogeneous superconductors. The temperature and field dependence of ρf in all samples studied exhibits a universal scaling relation of the form ρf/ρn =f(h, t), where ρn is the normal state resistivity, andh andt are the reduced field and reduced temperature, respectively. The results are compared with predictions of the time-dependent microscopic theories for bulk superconductors in the dirty limit. In the low-field region (H≪Hc2) the viscosity coefficient contains both the ordinary (Bardeen-Stephen, Tinkham) and anomalous (Gor'kov-Kopnin) terms. ForH⋍Hc2 the results agree qualitatively with the theory of Imai with pair-breaking in the anomalous term. Implications of the present results are discussed. More... »

PAGES

15-25

References to SciGraph publications

  • 1977-05. Flux flow resistivity of superconducting thin film in JOURNAL OF LOW TEMPERATURE PHYSICS
  • 1977-09. Strong coupling effects in the temperature dependence of the flux-flow resistance nearHc2 in ZEITSCHRIFT FÜR PHYSIK B CONDENSED MATTER
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    http://scigraph.springernature.com/pub.10.1007/bf00681474

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    http://dx.doi.org/10.1007/bf00681474

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