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

Ruoping Wang; Kristen A. Fichthorn

doi:10.1080/08927029308022503

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

Ruoping Wang
, Kristen A. Fichthorn

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

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 language	English (US)
Pages (from-to)	105-120
Number of pages	16
Journal	Molecular Simulation
Volume	11
Issue number	2-4
DOIs	https://doi.org/10.1080/08927029308022503
State	Published - Oct 1 1993

All Science Journal Classification (ASJC) codes

General Chemistry
Information Systems
Modeling and Simulation
General Chemical Engineering
General Materials Science
Condensed Matter Physics

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10.1080/08927029308022503

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title = "An investigation of adsorption-induced smoothing mechanisms in pt/pt(lll) homoepitaxy",

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.",

author = "Ruoping Wang and Fichthorn, \{Kristen A.\}",

note = "Funding Information: This work was funded by the National Science Foundation under grant CTS-9058013. The computer workstations were provided by a NSF equipment grant. We acknowledge helpful discussions with the DePristo group at Iowa State University, in particular, with Dr. David E. Sanders. We also thank Mr. Prakash Balan for his help with the computer animation.",

year = "1993",

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doi = "10.1080/08927029308022503",

language = "English (US)",

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journal = "Molecular Simulation",

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T1 - An investigation of adsorption-induced smoothing mechanisms in pt/pt(lll) homoepitaxy

AU - Wang, Ruoping

AU - Fichthorn, Kristen A.

N1 - Funding Information: This work was funded by the National Science Foundation under grant CTS-9058013. The computer workstations were provided by a NSF equipment grant. We acknowledge helpful discussions with the DePristo group at Iowa State University, in particular, with Dr. David E. Sanders. We also thank Mr. Prakash Balan for his help with the computer animation.

PY - 1993/10/1

Y1 - 1993/10/1

N2 - 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.

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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U2 - 10.1080/08927029308022503

DO - 10.1080/08927029308022503

M3 - Article

AN - SCOPUS:0027800663

SN - 0892-7022

VL - 11

SP - 105

EP - 120

JO - Molecular Simulation

JF - Molecular Simulation

IS - 2-4

ER -

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

Abstract

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