Angular dependence of X-ray-excited valence-band photoelectron spectra of diamond
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 82 (4) , 541-550
- https://doi.org/10.1039/f29868200541
Abstract
Angle-resolved valence-band X-ray photoelectron spectra from (110) single-crystal diamond surfaces are reported and discussed. Comparison of the spectra from polished, oxidatively eroded and heated (ca. 1070 K) surfaces enabled the O 2s and O 2p contributions to the spectra to be positively identified. The marked angular dependence of the relative intensities and energies of the major intrinsic valence-band components is attributed to the sampling of different portions of the Brillouin zone at different angles of photoelectron emission, as a result of wavevector-conserving direct transitions, in accordance with theoretical expectations. The angle-integrated valance-band profile obtained by summation is compared with previous experimental work and with calculated densities-of-states.Keywords
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