High-Tc superconductivity in new oxide systems

Shoichi Hosoya, Shin Ichi Shamoto, Masashige Onoda, Masatoshi Sato

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)


Superconducting transitions have been observed by resistivity measurements for several specimens of L-M-Cu-O system with L being Yb, Lu, Y, La and the mixture of Yb and La, and M being Ba and mixture of Ba and Sr. The onset transition temperature Tc becomes very close to 100 K. Since Yb-Ba-Cu-O and Lu-Ba-Cu-O have almost the same transition temperatures (Tc>90 K), the magnetic moment of Yb atoms does not seem to destroy the superconductivity in the present system. This suggests that the superconductivity occurs in certain parts of the system which are, at least, far from the Yb atom sites. Therefore M-Cu-O or Cu-O system may have an essential role in the occurrence of the superconductivity.

Original languageEnglish
Pages (from-to)L325-L362
JournalJapanese journal of applied physics
Issue number4 A
Publication statusPublished - 1987 Apr

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy


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