Step-edge versus interior barriers to atom incorporation at lattice steps

Sang Mun Oh, Kentaro Kyuno, Shi Cai Wang, Gert Ehrlich

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Observations of the spatial distribution of individual atoms over close-packed (111) clusters of the fcc metals platinum as well as iridium reveal that atoms preferentially populate the inner region. The inner region is separated by an energy barrier from the step edge, leaving empty of adatoms a ring approximately three nearest-neighbor distances wide. The effect of such an interior energy barrier upon the lifetime to atom incorporation into steps is explored for one- as well as two-dimensional clusters. Interior barriers are found to increase the lifetime to incorporation much more than the conventional step-edge barrier, and may significantly affect the morphology of growing surfaces.

Original languageEnglish
Article number075413
Pages (from-to)754131-754137
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number7
Publication statusPublished - 2003 Feb 15
Externally publishedYes

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Energy barriers
Atoms
Platinum metals
atoms
Iridium
Adatoms
life (durability)
Spatial distribution
iridium
adatoms
spatial distribution
platinum
energy
rings
metals

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Step-edge versus interior barriers to atom incorporation at lattice steps. / Oh, Sang Mun; Kyuno, Kentaro; Wang, Shi Cai; Ehrlich, Gert.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 67, No. 7, 075413, 15.02.2003, p. 754131-754137.

Research output: Contribution to journalArticle

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