Relation between crystal structure and superconductivity in La2-xBixCuO4+δ with excess oxygen

Masatsune Kato, T. Aoki, H. Chizawa, Yoji Koike, Y. Ono, Takashi Noji, T. Hikita, Y. Saito

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The relation between the crystal structure and superconductivity has been investigated for La2-xBixCuO4+δ with excess oxygen, in which the phase separation observed in La2CuO4+δ is suppressed. In the range of 0.03≲δ≲0.1 and T≲100 K, the crystal structure is orthorhombic for x = 0.05, while it is tetragonal for x=0.10. With increasing δ, Tc increases and then reaches the maximum value, 20-25 K, at δ ≳ 0.05 for 0.05≤x≤0.10, independent of the crystal structure. The overall symmetry of the crystal structure is concluded not to be so responsible for the appearance of high-Tc superconductivity.

Original languageEnglish
Pages (from-to)337-338
Number of pages2
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 1994 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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