Dimer diffusion as a driving mechanism of the step bunching instability during homoepitaxial growth

M. Vladimirova, A. De Vita, A. Pimpinelli

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

The impact of ad-dimer diffusion on the morphology of an epitaxially growing stepped surface is studied analytically and by kinetic Monte Carlo simulations. It is shown that if diffusing adatoms are hindered by an Ehrlich-Schwoebel barrier at step edges, ad-dimer diffusion gives rise to a step bunching instability, provided that the corresponding Ehrlich-Schwoebel barrier for ad-dimers is small or vanishing.

Original languageEnglish (US)
Article number245420
Pages (from-to)2454201-2454206
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number24
DOIs
StatePublished - Dec 15 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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