Kinetics of mesa overlayer growth: Climbing of adatoms onto the mesa top

TitleKinetics of mesa overlayer growth: Climbing of adatoms onto the mesa top
Publication TypeJournal Article
Year of Publication2008
AuthorsHan Y, Liu F, Li SC, Jia JF, Xue QK, Lee BJ
Journal TitleApplied Physics Letters
Volume92
Pages021909
Date PublishedJan
Type of ArticleArticle
ISBN Number0003-6951
Accession NumberISI:000252470900041
Keywordsdiffusion
Abstract

We have calculated the energy barriers for an adatom climbing up onto a Pb mesa top either over a facet-facet edge or through a facet-step joint, using a modified embedded atom method. We found that the second process is not only thermodynamically more favorable than the first one but also much faster with a diminishing barrier. Our results provide a plausible explanation for the experimentally observed intriguing growth behavior of a Pb mesa. The underlying mechanisms can be generally applicable to other systems. (c) 2008 American Institute of Physics.

DOI10.1063/1.2827200
Alternate JournalAppl. Phys. Lett.