Bulk screening in core-level photoemission from Mott-Hubbard and charge-transfer systems

M. Taguchi, A. Chainani, N. Kamakura, K. Horiba, Y. Takata, M. Yabashi, K. Tamasaku, Y. Nishino, D. Miwa, T. Ishikawa, S. Shin, E. Ikenaga, T. Yokoya, K. Kobayashi, T. Mochiku, K. Hirata, K. Motoya

研究成果: Article同行評審

85 引文 斯高帕斯(Scopus)

摘要

We report bulk-sensitive hard x-ray (hν=5.95 keV) core-level photoemission spectroscopy (PES) of single crystal V1.98 Cr0.02 O3 and the high- Tc cuprate Bi2 Sr2 Ca Cu2 O8+δ (Bi2212). V1.98 Cr0.02 O3 exhibits low binding energy "satellites" to the V 2p "main lines" in the metallic phase, which are suppressed in the antiferromagnetic insulator phase. In contrast, the Cu 2p spectra of Bi2212 do not show temperature-dependent features, but a comparison with soft x-ray PES indicates a large increase in the 2 p5 3 d9 satellites or 3 d9 weight in the bulk. Cluster model calculations, including a full multiplet structure and a screening channel derived from the coherent band at the Fermi energy, give very satisfactory agreement with the experiments.

原文English
文章編號155102
期刊Physical Review B - Condensed Matter and Materials Physics
71
發行號15
DOIs
出版狀態Published - 2005

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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