High temperature superconducting Josephson junctions in a stacked bicrystal geometry

H. Q. Li, R. H. Ono, L. R. Vale, D. A. Rudman, Sy-Hwang Liou

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Abstract

Bicrystal grain boundary Josephson junctions were fabricated in a stack of two layers of YBa2Cu3Ox separated by epitaxial SrTiO3. 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-voltage characteristics of the upper-layer junctions, and interactions between junctions in the two layers were evident.

Original languageEnglish (US)
Pages (from-to)1121-1123
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number8
DOIs
Publication statusPublished - Aug 25 1997

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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