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Charge dynamics in strongly correlated one-dimensional Cu-O chain systems revealed by inelastic x-ray scattering

S. Suga, S. Imada, A. Higashiya, A. Shigemoto, S. Kasai, M. Sing, H. Fujiwara, A. Sekiyama, A. Yamasaki, C. Kim, T. Nomura, J. Igarashi, M. Yabashi, and T. Ishikawa
Phys. Rev. B 72, 081101(R) – Published 11 August 2005

Abstract

We report on the Cu 1s resonant inelastic x-ray scattering (RIXS) of Cu-O one-dimensional strongly correlated insulator systems with contrasting atomic arrangements, namely edge-sharing CuGeO3 and corner-sharing Sr2CuO3. Owing to good statistics of the high-resolution RIXS data, so far unresolved fine structures are revealed. Detailed photon-energy and momentum dependence of the RIXS spectra in comparison with theoretical calculations has clarified the natures of the low-energy charge excitations and hybridization of the electronic states.

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  • Received 22 February 2005

DOI:https://doi.org/10.1103/PhysRevB.72.081101

©2005 American Physical Society

Authors & Affiliations

S. Suga1, S. Imada1, A. Higashiya1,2, A. Shigemoto1, S. Kasai1, M. Sing1, H. Fujiwara1, A. Sekiyama1, A. Yamasaki1, C. Kim3, T. Nomura4, J. Igarashi4,5, M. Yabashi6, and T. Ishikawa2,6

  • 1Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
  • 2SPring-8/Riken 1-1-1 Kouto, Mikazuki, Sayo, Hyogo 679-8148, Japan
  • 3Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea
  • 4Synchrotron Radiation Research Center, JAERI, Mikazuki, Sayo, Hyogo 679-5148, Japan
  • 5Faculty of Science, Ibaraki University, Mito, Ibaraki, 310-8512, Japan
  • 6SPring-8/JASRI 1-1-1 Kouto, Mikazuki, Sayo, Hyogo 679-5198, Japan

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Issue

Vol. 72, Iss. 8 — 15 August 2005

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