In an analytical and Monte Carlo simulation analysis of an interrupted step-flow growth on a vicinal substrate, we find that the asymptotic behavior of the adatom monomer density during recovery is dominated by a single exponential decay, exp(-π2Dt/4Lterrace 2). Here D is the adatom diffusion coefficient over flat terraces, and Lterrace is the averaged width of the terraces. Consequently, by monitoring the recovery of optical reflectance difference or reflection high-energy electron diffraction from such a surface, one should be able to determine reliably the adatom diffusion coefficient under high-temperature growth conditions.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Apr 15 1998|
ASJC Scopus subject areas
- Condensed Matter Physics