Observation of Surface States in the Auger Spectra of Clean and Oxygen-Chemisorbed Si(111) 7×7
- 24 March 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 44 (12), 814-817
- https://doi.org/10.1103/physrevlett.44.814
Abstract
The first observation of Si(111) 7×7 intrinsic surface states that uses Auger electron spectroscopy as a valence band spectroscopy is reported. A global inversion method based upon the fast Fourier transform was used to self-deconvolve the Auger spectra. Subsequent oxygen chemisorption is shown to give rise to electronic levels. Only at the beginning of the oxidation stage are the surface states completely removed.
Keywords
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