Metallic, band-like behaviour of EuBa2Cu3O6.7 as seen from UPS spectra Comparison with band calculations

A. J. Arko, R. S. List, Z. Fisk, S. W. Cheong, J. D. Thompson, J. A. O'Rourke, C. G. Olson, A. B. Yang, Tun Wen Pi, J. E. Schirber, N. D. Shinn

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Abstract

Valence band photoemission spectra of single crystals of EuBa2Cu3O6.7, cleaved and measured at T=20 K, are presented. A stable Fermi edge is observed, whose amplitude is ≈10% of the maximum valence band intensity. This suggests metallic behavior. Except for 1 eV shift toward higher binding energy, the results compare favorably with previous band calculations, and hint at a re-examination of theories based purely on a localized electronic structure. There is evidence for both Cu-3d and O-2p occupation at EF, as predicted by band calculations.

Original languageEnglish (US)
Pages (from-to)L1-L6
JournalJournal of Magnetism and Magnetic Materials
Volume75
Issue number1-2
DOIs
StatePublished - Nov 1988
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Arko, A. J., List, R. S., Fisk, Z., Cheong, S. W., Thompson, J. D., O'Rourke, J. A., Olson, C. G., Yang, A. B., Pi, T. W., Schirber, J. E., & Shinn, N. D. (1988). Metallic, band-like behaviour of EuBa2Cu3O6.7 as seen from UPS spectra Comparison with band calculations. Journal of Magnetism and Magnetic Materials, 75(1-2), L1-L6. https://doi.org/10.1016/0304-8853(88)90111-4