Electron energy loss spectroscopy on oxygen k-edge fine structure of YBa2Cu3Oycontaining dopants (La, Ca, Co)

Daisuke Shindo, Kenji Hiraga, Ayako Tokiwa, Takeshi Soga, Kiichi Hojou, Shigemi Furuno, Hitoshi Otsu, Satoru Nakajima, Makoto Hirabayashi, Masae Kikuchi, Yasuhiko Syono

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The fine structures of the oxygen K-edge in the Y-Ba-Cu-O system, in which hole content was controlled by reducing the oxygen content and doping elements (La, Ca and Co), were investigated by electron energy loss spectroscopy (EELS). When Ba(+2)and Y(+3) were replaced by La(+3) and Ca(+2), respectively, the oxygen content of the sample changed and the peak corresponding to the hole state near the Fermi energy sensitively changed with the average hole content. When Cu(+2) was replaced by Co(+3), Tc decreased drastically and the peak at the oxygen K-edge shifted to higher energy.

本文言語English
ページ(範囲)L1197-L1200
ジャーナルJapanese Journal of Applied Physics
28
7 A
DOI
出版ステータスPublished - 1989 7
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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