Isotope effect in superconducting YBa2Cu3O7-δ system

Hiroshi Katayama-Yoshida, Tsuguyoshi Hirooka, Angelo J. Mascarenhas, Yutaka Okabe, Takashi Takahashi, Taizo Sasaki, Akira Ochiai, Takashi Suzuki, Jacques I. Pankove, Ted Ciszek, Satyen K. Deb

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31 Citations (Scopus)


An oxygen isotope effect is observed by a measurement of the resistivity when 16O is infstituted for 18O in the YBa2Cu3O7-δ compound. The superconducting transition temperature T c is lowered by 0.4 K upon infstitution. The results suggest that the phonon related to oxygen in the two-dimensional CuO2 plane contributes to the mechanism of high-T c superconductivity. When 63Cu is infstituted for 65Cu, no appreciable isotope effect is observed.

Original languageEnglish
Pages (from-to)L2085-L2086
JournalJapanese journal of applied physics
Issue number12 A
Publication statusPublished - 1987 Dec
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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