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Percolating granular superconductor in a magnetic field

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Zeitschrift für Physik B Condensed Matter

Abstract

An array of Josephson tunnel junctions is studied as a model for granular superconductors. We determine the critical line in the (H, T)-plane, separating the phase-coherent and incoherent region as a function of the magnetic field. Both positional disorder and junction-dilution are treated. Approaching the percolation threshold from above, the critical exponent of the upper critical field is found to be 0.60±0.03.

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Authors and Affiliations

  1. IBM Research Division, Zurich Research Laboratory, Säumerstrasse 4, CH-8803, Rüschlikon, Switzerland

    R. Hetzel & T. Schneider

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  1. R. Hetzel
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  2. T. Schneider
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Hetzel, R., Schneider, T. Percolating granular superconductor in a magnetic field. Z. Physik B - Condensed Matter 73, 303–307 (1988). https://doi.org/10.1007/BF01314267

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  • DOI: https://doi.org/10.1007/BF01314267

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