Determination of surface-diffusion kinetics of adatoms in epitaxy under step-flow growth conditions

X. D. Zhu

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

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 languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number16
StatePublished - Apr 15 1998

ASJC Scopus subject areas

  • Condensed Matter Physics

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