Hole states in CuO2 planes and Cu-O chains of YBa2Cu3O7 and YBa2Cu4O8 probed by soft-x-ray absorption spectroscopy

A. Krol, Z. H. Ming, Y. H. Kao, N. N̈cker, G. Roth, J. Fink, G. C. Smith, Key Taeck Park, Jaejun Yu, Arthur J Freeman, A. Erband, G. M̈ller-Vogt, J. Karpinski, E. Kaldis, K. Schönmann

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Abstract

The symmetry and density of unoccupied states of twin-free YBa2Cu3O7 and YBa2Cu4O8 single crystals have been investigated by orientation-dependent x-ray absorption spectroscopy at the O 1s edge, using a bulk-sensitive fluoresence-yield-detection method. In conjunction with earlier results obtained by electron-energy-loss spectroscopy, the relative density of unoccupied states for different oxygen sites has been derived. Comparison with local-density energy-band-structure calculations shows reasonable agreement with the experimental results.

Original languageEnglish
Pages (from-to)2581-2584
Number of pages4
JournalPhysical Review B
Volume45
Issue number5
DOIs
Publication statusPublished - 1992

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ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Krol, A., Ming, Z. H., Kao, Y. H., N̈cker, N., Roth, G., Fink, J., Smith, G. C., Park, K. T., Yu, J., Freeman, A. J., Erband, A., M̈ller-Vogt, G., Karpinski, J., Kaldis, E., & Schönmann, K. (1992). Hole states in CuO2 planes and Cu-O chains of YBa2Cu3O7 and YBa2Cu4O8 probed by soft-x-ray absorption spectroscopy. Physical Review B, 45(5), 2581-2584. https://doi.org/10.1103/PhysRevB.45.2581