Structural anomalies in Nd2-xCexCuO4-y: Evidence for mixed valence and charge transfer

P. H. Hor, Y. Y. Xue, Y. Y. Sun, Y. C. Tao, Z. J. Huang, W. Rabalais, C. W. Chu

研究成果: Article同行評審

23 引文 斯高帕斯(Scopus)

摘要

The electron oxide superconductors Nd2-xCexCuO4-y have been investigated by X-ray diffraction, XPS, magnetization and resistivity measurements. We found that Ce-ions lie between the 3+ and 4+ valence states, and that sharp changes in various bond-lengths occur near x=0.15 coinciding with the onset of superconductivity. The later has been taken as evidence for electron-transfer to the CuO2-layers. The results and their implications are discussed.

原文English
頁(從 - 到)629-633
頁數5
期刊Physica C: Superconductivity and its applications
159
發行號5
DOIs
出版狀態Published - 1989 七月 15

All Science Journal Classification (ASJC) codes

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

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