High temperature superconducting Josephson junctions in a stacked bicrystal geometry

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.119746· OSTI ID:538379

Li, H Q; Ono, R H; Vale, L R; Rudman, D A ^[1]; Liou, S H ^[2]

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1. National Institute of Standard and Technology (NIST), Boulder, Colorado 80303 (United States)
2. University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0111 (United States)

Bicrystal grain boundary Josephson junctions were fabricated in a stack of two layers of YBa{sub 2}Cu{sub 3}O{sub x} separated by epitaxial SrTiO{sub 3}. Weak link behavior was observed in the bridges formed in both layers that had similar shunted-junction characteristics but significantly different critical currents. Characteristic voltages up to 1.9 mV were measured at 4.5 K. The resonant structure was seen in the current{endash}voltage characteristics of the upper-layer junctions, and interactions between junctions in the two layers were evident. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Purdue Research Foundation
• DOE Contract Number: FG02-90ER45427
• OSTI ID: 538379
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 8 Vol. 71; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
BARIUM OXIDES
BICRYSTALS
COPPER OXIDES
CRITICAL CURRENT
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
STRONTIUM COMPOUNDS
STRONTIUM TITANATES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES