Dissipation in a weak-link-limited superconductor as a problem of percolation theory

Prester, Mladen and Babić, Emil and Stubičar, Mirko and Nozar, P. (1994) Dissipation in a weak-link-limited superconductor as a problem of percolation theory. Physical Review B, 49 (10). pp. 6967-6970. ISSN 1098-0121

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Abstract

Broadening of the resistive transition of sintered GdBa2Cu3O7-x superconductor has been studied varying the measuring current over the range of five orders of magnitude. The observed well-defined branching points in the resistive transition coincide with the quasi-Ohmic saturation of V-I curves and scale with the average grain size. The results suggest the validity of a simple percolation model for dissipation in systems whose global superconductivity is realized by Josephson coupling of the superconducting grains. A common origin of structured resistive transition, observed in many superconducting systems, has been also discussed.

Item Type: Article
Date: March 1994
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (1994) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 27 Aug 2014 12:40
Last Modified: 27 Aug 2014 12:40
URI: http://digre.pmf.unizg.hr/id/eprint/1433

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