Break-junction tunneling measurements of the high-Tc superconductor Y1Ba2Cu3O9-

J. Moreland, J. W. Ekin, L. F. Goodrich, T. E. Capobianco, A. F. Clark, J. Kwo, M. Hong, S. H. Liou

Research output: Contribution to journalArticlepeer-review

90 Scopus citations


Current-voltage tunneling characteristics in a high-critical-temperature superconducting material containing predominately Y1Ba2Cu3O9- have been measured using the break-junction technique. Sharp gap structure was observed, with the largest superconductive energy gap measured to be =19.51 meV, assuming a superconductor-insulator-superconductor junction. This energy gap corresponds to 2/kBTc=4.8 at T=4 K, for a critical temperature of 93 K (midpoint of the resistive transition).

Original languageEnglish (US)
Pages (from-to)8856-8857
Number of pages2
JournalPhysical Review B
Issue number16
StatePublished - 1987
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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