Large-cluster effects on core-level photoemission spectra of quasi-one-dimensional copper compounds

Kozo Okada, Akio Kotani

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The large-cluster effect on the Cu 2p X-ray photoemission spectrum (XPS) for quasi-one-dimensional Cu-O systems, such as Sr2CuO3, CuGeO3 and LiCuO2, is discussed. Recent experiments clearly show that the line shape of the main peak (d10L(Combining low line)) differs for these systems, although it must be a structureless narrow peak for all of them within the framework of a CuO4 cluster model analysis. It is shown that whether the Cu-O-Cu bond angle is 90° or 180° is a key factor in discussing the Cu 2p main-line shape as well as the magnetic coupling between the Cu spins.

Original languageEnglish
Pages (from-to)255-260
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume88-91
Publication statusPublished - Mar 1 1998

Keywords

  • Core-level photoemission
  • Corner-sharing
  • Edge-sharing
  • Large-cluster effect
  • Superexchange interaction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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