Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

A resonant photoemission study of the ZrO2 valence band


Stampfl,  A.
Fritz Haber Institute, Max Planck Society;


Bradshaw,  Alexander M.
Fritz Haber Institute, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Sam, J., Gonzalez-Elipe, A., Fernández, A., Leinen, D., Galan, L., Stampfl, A., et al. (1994). A resonant photoemission study of the ZrO2 valence band. Surface Science, 307-309(B), 848-853. doi:10.1016/0039-6028(94)91502-4.

Cite as: https://hdl.handle.net/21.11116/0000-0009-9B2F-5
Valence band photoemission spectra have been measured from in situ thermally grown ZrO2 using synchrotron radiation. Resonant photoemission was observed at photon energies hv ≈ 39 eV, well above the Zr4p → 4d threshold. The phenomenon has been used to identify the Zr 4d derived valence states and good agreement was found with valence band structure calculations. Ar+ bombardment of ZrO2 causes the growth of an emission feature in the band gap at a binding energy of 1.5 eV associated with oxygen vacancies as well as a second band at 3.5 eV and other changes in the O 2p band, all of which are clearly associated with the formation of a highly oxygen deficient surface layer. Resonant photoemission of the bombarded oxide not only demonstrates the d-character of the states in the band gap but also shows a significant increase of the Zr contribution to the O2p band.