Published December 26, 1988 | Version v1
Journal article

Tunnel junctions using oxide superconducting thin films epitaxially grown on SrTiO3

  • 1. Institute for Chemical Research, Kyoto University, Uji 611, Japan

Description

Normal-metal/insulator/superconductor (NIS) junctions were fabricated using thin films of YBa2Cu3O/sub 7-//sub x/ (YBCO) or ErBa2Cu3O/sub 7-//sub x/. These were epitaxially grown on single-crystal SrTiO3 by the activated reactive evaporation method. For some NIS junctions prepared on SrTiO3 (110) substrates, we observed multipeaks in the differential conductance versus voltage curve. NIS junctions using single-crystal YBCO films on SrTiO3 (100) showed a set of peaks, from which we obtained a gap parameter of 11.5 +- 1.5 meV at 4.4 K and a coupling constant of 3.2 +- 0.4

Additional details

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
53
Journal Issue
26
Series
Appl. Phys. Lett.
Journal Page Range
2689-2691
ISSN
0003-6951
CODEN
APPLA