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

Scientific paper - Original scientific paper

• Author: Mladen Prester
• Author: Emil Babić
• Author: Mirko Stubičar
• Author: P. Nozar
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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.

• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review B (Condensed Matter)
• Numbering: vol. 49, no. 10, pp. 6967-6970
• p-ISSN: 0163-1829
• DOI: https://doi.org/10.1103/PhysRevB.49.6967
• URN:NBN: urn:nbn:hr:217:548585
• Publication: 1994
• Document URL: http://link.aps.org/doi/10.1103/PhysRevB.49.6967
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (1994) by the American Physical Society.
• Created on: 2019-10-03 07:43:54