Superconductivity in the tetragonal phase of La1.9Bi0.1CuO4+δ annealed under high oxygen pressure

Masatsune Kato, Takaaki Aoki, Takashi Noji, Yasuhiro Ono, Yoji Koike, Tomoyuki Hikita, Yoshitami Saito

研究成果: Article査読

抄録

We have investigated the relation between the crystal structure and superconductivity in La1.9Bi0.1CuO4+δ, in which the phase separation observed in La2CuO4+δ is suppressed. A phase diagram in the T-δ plane is given for La1.9Bi0.1CuO4+δ with excess oxygen. For very small δ values, the crystal structure is orthorhombic, and an orthorhombic-tetragonal phase transition occurs markedly at δ ∼ 0.03 in the measured temperature range between 13 and 293 K. Superconductivity is observed in the range of 0.04<δ<0.11. This is clear evidence that high-Tc superconductivity also appears in the tetragonal phase.

本文言語English
ページ(範囲)37-38
ページ数2
ジャーナルJournal of Superconductivity
7
1
DOI
出版ステータスPublished - 1994 2 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

フィンガープリント 「Superconductivity in the tetragonal phase of La<sub>1.9</sub>Bi<sub>0.1</sub>CuO<sub>4+δ</sub> annealed under high oxygen pressure」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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