Electronic structure and magnetic states i studied by photoemission and x-ray-absorption spectroscopy

T. Saitoh, T. Mizokawa, A. Fujimori, M. Abbate

Research output: Contribution to journalArticle

150 Citations (Scopus)

Abstract

We have studied the effects of hole doping on the electronic structure of La(Formula presented)Sr(Formula presented)CoO(Formula presented) by photoemission and x-ray-absorption spectroscopy. The Co 2(Formula presented) core-level and the valence-band spectra show charge-transfer satellites, which have been more obviously observed in 3(Formula presented)-3(Formula presented) resonant-photoemission spectra. By Sr substitution for La in LaCoO(Formula presented), the valence-band spectra do not show rigid-band behavior but change systematically and reflect the semiconductor-to-metal transition which occurs with hole doping. Only small changes with (Formula presented) have been observed in the resonant-photoemission spectra. Combined with configuration-interaction cluster-model calculations, this observation suggests that the intermediate-spin state is realized in the ferromagnetic phase.

Original languageEnglish
Pages (from-to)1290-1295
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Issue number3
DOIs
Publication statusPublished - 1997 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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