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Characteristics of advanced YBa sub 2 Cu sub 3 O sub x /PrBa sub 2 Cu sub 3 O sub x /YBa sub 2 Cu sub 3 O sub x edge type junctions

Journal Article · · Applied Physics Letters; (United States)
DOI:https://doi.org/10.1063/1.105878· OSTI ID:6131769
; ; ; ; ;  [1]
  1. Department of Applied Physics, University of Twente, P.O. Box. 217, 7500 AE Enschede (the Netherlands)
This letter describes the scaling behavior and Josephson properties of improved YBCO/PBCO/YBCO edge-type junctions. The critical current, normal-state resistance, and {ital I}{sub {ital c}R{ital n}} product scale with barrier thickness and junction area. The coherence length of the PBCO barrier is estimated to be between 5 and 8 nm. As unambiguous evidence of the Josephson behavior, the microwave response as a function of microwave power, as well as the current modulation with applied magnetic field, have been studied: well-developed Shapiro steps at 10 GHz have been observed, and the modulation of {ital I}{sub {ital c}}({ital H}) shows Fraunhofer-like behavior with 95% {ital I}{sub {ital c}} suppression.
OSTI ID:
6131769
Journal Information:
Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:21; ISSN APPLA; ISSN 0003-6951
Country of Publication:
United States
Language:
English