Abstract
The temperature dependence of low-energy electron diffraction intensity-energy spectra from the graphite (0001) surface has been measured from 100 to 600 K. The perpendicular and parallel effective surface Debye temperatures and the effective mean-square vibration amplitudes as a function of electron energy have been determined from these data. The values show surface enhancement and approach the bulk values with increasing electron energy. At energies below ≈ 100 eV, however, there is little anisotropy observed between the effective Debye temperatures parallel and perpendicular to the graphite surface.
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