An investigation of adsorption-induced smoothing mechanisms in pt/pt(lll) homoepitaxy

Ruoping Wang, Kristen Ann Fichthorn

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We report the results of a molecular dynamics study of the deposition of Pt atoms on a Pt(l 11) surface. The interatomic potential in our study is generated from Corrected Effective Medium theory. The transient mobility, the interaction between an atom and a ascending step edge, and the incorporation of an atom into a descending step edge have been investigated. No significant transient mobility is observed. Adatoms exchange with atoms at the descending step edges rather than jumping over the edges, and the exchange can involve two or more atoms. Our simulations indicate that the exchange is assisted by instantaneous momentum transfer between the impinging atom and the island atoms.

Original languageEnglish (US)
Pages (from-to)105-120
Number of pages16
JournalMolecular Simulation
Volume11
Issue number2-4
DOIs
StatePublished - Oct 1 1993

Fingerprint

Adsorption
smoothing
Smoothing
Atoms
adsorption
atoms
Ion exchange
Interatomic Potential
Adatoms
Momentum transfer
Molecular Dynamics
adatoms
momentum transfer
Instantaneous
Molecular dynamics
Momentum
molecular dynamics
Interaction
Simulation
simulation

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Information Systems
  • Materials Science(all)
  • Modeling and Simulation
  • Condensed Matter Physics
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics

Cite this

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An investigation of adsorption-induced smoothing mechanisms in pt/pt(lll) homoepitaxy. / Wang, Ruoping; Fichthorn, Kristen Ann.

In: Molecular Simulation, Vol. 11, No. 2-4, 01.10.1993, p. 105-120.

Research output: Contribution to journalArticle

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AB - We report the results of a molecular dynamics study of the deposition of Pt atoms on a Pt(l 11) surface. The interatomic potential in our study is generated from Corrected Effective Medium theory. The transient mobility, the interaction between an atom and a ascending step edge, and the incorporation of an atom into a descending step edge have been investigated. No significant transient mobility is observed. Adatoms exchange with atoms at the descending step edges rather than jumping over the edges, and the exchange can involve two or more atoms. Our simulations indicate that the exchange is assisted by instantaneous momentum transfer between the impinging atom and the island atoms.

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