Optical Anisotropy of the-Surface: Evidence for the Two-Adlayer Asymmetric-Dimer Model
- 13 November 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 85 (20) , 4381-4384
- https://doi.org/10.1103/physrevlett.85.4381
Abstract
The structure of the ( ) reconstruction of -SiC(001) surface has been identified by comparing reflectance anisotropy spectra calculated from first principles with recent measurements. Only the calculations for the two-adlayer asymmetric-dimer model agree with experiment. The two prominent peaks at 3.6 and 5.0 eV found experimentally are assigned to electronic transitions between surface and bulklike electronic states. A further pronounced anisotropy at 2.0 eV, due to transitions between surface states, is predicted.
Keywords
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