Abstract
Grazing incidence x-ray scattering was used to determine the temperature and ion-energy dependence of nanoscale corrugations that form on an amorphous surface eroded by ions. The corrugation wavelength shows a nearly linear dependence on ion energy. Between room temperature and , depends weakly on temperature and above it shows an Arrhenius-like increase. Ion-assisted viscous relaxation in a thin surface layer is shown to be the dominant smoothing process during erosion; the rate of viscous smoothing scales as .
- Received 16 July 2001
DOI:https://doi.org/10.1103/PhysRevLett.87.246104
©2001 American Physical Society