TITLE

Tunnel junctions using oxide superconducting thin films epitaxially grown on SrTiO3

AUTHOR(S)
Takada, J.; Terashima, T.; Bando, Y.; Mazaki, H.; Iijima, K.; Yamamoto, K.; Hirata, K.
PUB. DATE
December 1988
SOURCE
Applied Physics Letters;12/26/1988, Vol. 53 Issue 26, p2689
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Normal-metal/insulator/superconductor (NIS) junctions were fabricated using thin films of YBa2Cu3O7-x (YBCO) or ErBa2Cu3O7-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.
ACCESSION #
9829286

 

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