Interior barriers and dimer nucleation on islands

Sang Mun Oh, Kentaro Kyuno, Gert Ehrlich

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

On (1 1 1) islands of platinum as well as iridium self-adsorbed on (1 1 1) planes, it is now established that there are interior barriers impeding the movement of adatoms from the inner region to the steps of the island. We have carried out Monte Carlo simulations of adatoms migrating on such islands to establish the effect of interior barriers on the rate at which adsorbed atoms nucleate to form dimers rather than incorporate into the steps of the island. It is found that interior barriers significantly increase the rate at which dimers are created by collisions of two adatoms, and that the presence of additional step-edge barriers further raises the rate of dimer nucleation.

Original languageEnglish
JournalSurface Science
Volume540
Issue number1
DOIs
Publication statusPublished - 2003 Aug 10
Externally publishedYes

Fingerprint

Adatoms
Dimers
adatoms
Nucleation
dimers
nucleation
Iridium
Platinum
iridium
Atoms
platinum
collisions
simulation

Keywords

  • Clusters
  • Diffusion and migration
  • Monte Carlo simulations
  • Nucleation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Interior barriers and dimer nucleation on islands. / Oh, Sang Mun; Kyuno, Kentaro; Ehrlich, Gert.

In: Surface Science, Vol. 540, No. 1, 10.08.2003.

Research output: Contribution to journalArticle

Oh, Sang Mun ; Kyuno, Kentaro ; Ehrlich, Gert. / Interior barriers and dimer nucleation on islands. In: Surface Science. 2003 ; Vol. 540, No. 1.
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