Tunneling measurements on superconductor/insulator/superconductor junctions using single-crystal YBa2Cu3O7-x thin films

K. Hirata, K. Yamamoto, K. Iijima, J. Takada, T. Terashima, Y. Bando, H. Mazaki

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

We have, for the first time, made quasi-particle tunneling measurements on a YBa2Cu3O7-x(001)/Y2O3 (001)/YBa2 Cu3 O7-x (001)junction, which was epitaxially grown on a MgO(100) substrate in an in-situ process. Both layers of YBa2 Cu3 O7-x showed the same superconducting transition of Tc end =86 K with ΔT(R=10-90%)=1.5 K. Quasi-particle tunneling in the direction perpendicular to the Cu-O planes was measured. A gap parameter Δ(4.5 K) of 9.0±0.2 meV and a value of 2Δ/kTc of 3.5+0.4-0.6 were obtained.

Original languageEnglish
Pages (from-to)683-685
Number of pages3
JournalApplied Physics Letters
Volume56
Issue number7
DOIs
Publication statusPublished - Dec 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Tunneling measurements on superconductor/insulator/superconductor junctions using single-crystal YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> thin films'. Together they form a unique fingerprint.

  • Cite this

    Hirata, K., Yamamoto, K., Iijima, K., Takada, J., Terashima, T., Bando, Y., & Mazaki, H. (1990). Tunneling measurements on superconductor/insulator/superconductor junctions using single-crystal YBa2Cu3O7-x thin films. Applied Physics Letters, 56(7), 683-685. https://doi.org/10.1063/1.103311