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

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Abstract

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.

Original languageEnglish
Article number155102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number15
DOIs
Publication statusPublished - Dec 14 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Taguchi, M., Chainani, A., Kamakura, N., Horiba, K., Takata, Y., Yabashi, M., Tamasaku, K., Nishino, Y., Miwa, D., Ishikawa, T., Shin, S., Ikenaga, E., Yokoya, T., Kobayashi, K., Mochiku, T., Hirata, K., & Motoya, K. (2005). Bulk screening in core-level photoemission from Mott-Hubbard and charge-transfer systems. Physical Review B - Condensed Matter and Materials Physics, 71(15), [155102]. https://doi.org/10.1103/PhysRevB.71.155102