Low-energy-electron-diffraction intensity-energy spectra obtained from the (0001) face of graphite have been compared to dynamical-scattering calculations for models of a reconstructed and unreconstructed surface. Agreement is found via r-factor analysis for the model assuming the bulk layer stacking sequence (ABAB) at the surface and a top carbon layer contraction of 0.05 {} (1.5% of the bulk value) and a surface nearly devoid of monatomic steps.
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Wu et al. (1982) studied this question.
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