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

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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 - 1990
Externally publishedYes

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SIS (superconductors)
elementary excitations
single crystals
thin films

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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

Tunneling measurements on superconductor/insulator/superconductor junctions using single-crystal YBa2Cu3O7-x thin films. / Hirata, K.; Yamamoto, K.; Iijima, K.; Takada, J.; Terashima, T.; Bando, Y.; Mazaki, H.

In: Applied Physics Letters, Vol. 56, No. 7, 1990, p. 683-685.

Research output: Contribution to journalArticle

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, vol. 56, no. 7, pp. 683-685. https://doi.org/10.1063/1.103311
Hirata, K. ; Yamamoto, K. ; Iijima, K. ; Takada, J. ; Terashima, T. ; Bando, Y. ; Mazaki, H. / Tunneling measurements on superconductor/insulator/superconductor junctions using single-crystal YBa2Cu3O7-x thin films. In: Applied Physics Letters. 1990 ; Vol. 56, No. 7. pp. 683-685.
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AU - Bando, Y.

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