Nature of electronic states at the Fermi level of metallic beta-PbO2 revealed by hard x-ray photoemission spectroscopy

D J Payne, R G Egdell, G Paolicelli, F Offi, G Panaccione, P Lacovig, G Monaco, G Vanko, Aron Walsh, G W Watson, J Guo, G Beamson, P A Glans, T Learmonth, K E Smith

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34 Citations (Scopus)

Abstract

The nature of electronic states at the Fermi energy in metallic beta-PbO2 has been identified by hard x-ray photoemission spectroscopy (HXPS) combined with x-ray emission spectroscopy and density-functional theory calculations. Pb 6s states are strongly enhanced in HXP spectra, allowing us to locate the Fermi level above the top of the valence band. The occupied conduction-band states have significant Pb 6s character, although the major 6s contribution to the density of states is found 9 eV below the Fermi energy. The enormous potential of HXPS for the study of s states in oxides is emphasized.
Original languageEnglish
Article number153102
JournalPhysical Review B
Volume75
Issue number15
DOIs
Publication statusPublished - 2007

Keywords

  • lead dioxide
  • volpe project

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