Supercurrent distributions and flux penetration in YBa{sub 2}Cu{sub 3}O{sub 7}-YBa{sub 2}Co{sub 0.15}Cu{sub 2.85}O{sub 7}-YBa{sub 2}Cu{sub 3}O{sub 7} edge junctions

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.365765· OSTI ID:538422

Gausepohl, S C; Lee, M ^[1]; Berkowitz, S J; Mallison, W H ^[2]

---

1. Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)
2. Conductus, Inc., 969 West Maude Avenue, Sunnyvale, California 94086 (United States)

We report the measurement and analysis of critical current (I{sub c}) modulation and microwave response in magnetic field for a set of YBa{sub 2}Cu{sub 3}O{sub 7}-YBa{sub 2}Co{sub 0.15}Cu{sub 2.85}O{sub 7}-YBa{sub 2}Cu{sub 3}O{sub 7} ramp-edge Josephson junctions. These junctions have been fabricated with various widths w to span the transition from the moderately small (w{lt}2{lambda}{sub J}) to the moderately large (w{gt}2{lambda}{sub J}) junction limit at 77 K. As w increases, both the I{sub c} modulation and microwave absorption behavior independently suggest a growing contribution from edge supercurrents. The addition of a superconducting ground plane was shown to reduce the edge supercurrent effects. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 538422
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 82; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
BARIUM OXIDES
COBALT OXIDES
COPPER OXIDES
CRITICAL CURRENT
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
MAGNETIC FLUX
MICROWAVE RADIATION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES