Electronic structure of tetragonal studied by photoemission and x-ray-absorption spectroscopy

T. Mizokawa, A. Fujimori, H. Namatame

研究成果: Article査読

44 被引用数 (Scopus)

抄録

The electronic structure of the formally (Formula presented) metallic (Formula presented) has been studied by photoemission and x-ray-absorption spectroscopy. By analyzing the valence-band and Cu (Formula presented) core-level photoemission spectra using a (Formula presented) cluster model, the charge-transfer energy is estimated to be (Formula presented) indicating that the ground state is dominated by the (Formula presented) configuration with which the (Formula presented) configuration is strongly hybridized, where (Formula presented) denotes a ligand hole. However, agreement between the experimental results and the cluster-model calculations is not satisfactory for the detailed line shape of the main peaks. Especially, the Cu (Formula presented) x-ray-absorption spectrum cannot be well explained by the single-site cluster-model calculation, suggesting the importance of intercluster interaction. On the other hand, the existence of the charge-transfer satellite in the Pauli-paramagnetic state is explained by Hartree-Fock band-structure and self-energy calculations using parameters deduced from the analysis of the photoemission spectra.

本文言語English
ページ(範囲)9550-9556
ページ数7
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
57
16
DOI
出版ステータスPublished - 1998
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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