Electrical transport and superconductivity in a Au-YBa/sub 2/Cu/sub 3/O/sub 7/ percolation system

Journal Article · Fri Jul 01 00:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.776· OSTI ID:7032189

Xiao, G; Streitz, F H; Cieplak, M Z; Bakhshai, A; Gavrin, A; Chien, C L

Percolation behaviors of normal-state conductivity and superconductivity have been studied in a Au-YBa/sub 2/Cu/sub 3/O/sub 7/ granular system. The normal-state conductivity shows a percolation threshold at a Au volume fraction (p/sub Au/) of 23%, whereas the superconducting network shows a threshold at p/sub Au/approx.60%. The presence of Au has negligible effect on the superconducting YBa/sub 2/Cu/sub 3/O/sub 7/ phase. In the dilute limit, the ratio of the Meissner signal to the diamagnetic-shielding signal approaches unity.

• Research Organization: Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218
• OSTI ID: 7032189
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
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ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
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CHALCOGENIDES
COMPOSITE MATERIALS
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