Abstract
Planar tunneling junctions on Bi4Sr3Ca3Cu4O16+y (4334) which clearly exhibit the gap of the top electrode (In or Pb) have been prepared. Junction resistances range from 1Ω to 6kΩ over a 1 - 2mm2 area, the lower resistances being obtained only after plasma oxidation of the surface. We observe a linear conductance at varying biases above the gap region. No evidence of a gap in the 4334 material and no Josephson current has been observed even in the lowest resistance junctions. A short summary of the Bellcore work on the Cu-doped YBa2Cu3O7-y and La1.85Sr.15CuO4-y is also given.
Original language | English (US) |
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Pages (from-to) | 896-897 |
Number of pages | 2 |
Journal | Physica C: Superconductivity and its applications |
Volume | 153-155 |
Issue number | PART 2 |
DOIs | |
State | Published - 1988 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering