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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 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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