Photoemission spectroscopic study of copper-oxide superconductors and related materials

H. Eisaki, T. Ido, H. Takagi, S. Uchida, T. Mizokawa, H. Namatame, A. Fujimori, Y. Tokura, J. van Elp, P. Kuiper, G. A. Sawatzky, S. Hosoya, H. Katayama-Yoshida, K. Oka, H. Unoki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The electronic structure of high-Tc superconductors and related materials is studied by photoemission spectroscopy and Bremsstrahlung Isochromat spectroscopy. In the solid solution (La,Sr)2CuO4, (Nd,Ce)2CuO4, and (La,Sr)2NiO4 systems, the valence band spectra do not shift as a function of the doping concentration, which suggests that EF is pinned by the states within the charge-transfer gap and that the rigid band description is not appropriate in considering the metal-insulator transition in these systems.

Original languageEnglish
Pages (from-to)1225-1226
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - 1990
Externally publishedYes

ASJC Scopus subject areas

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

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