Elastic interactions of defects on (111) Au surfaces

Karl Sieradzki, F. H. Streitz

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report on the results of molecular-dynamic simulations of vacancy and vacancy-step interactions on a (111) Au surface. Near the vacancy the strain field decays as r-n with n2 and the dilatational strain undergoes a rapid oscillatory decay to zero at a distance of 1 nm from the vacancy. This result suggests that there is no direct long-range elastic interaction between vacancies on this surface. The elastic interaction between a vacancy and a step only becomes significant at separations of less than 1 nm and is controlled by a mixing of the oscillatory pressure field of the step with the dilatational field of the vacancy. Our calculations indicate that a vacancy on the upper portion of a terrace associated with a step has to overcome an energy barrier of 0.1 eV in order for vacancy annihilation to occur at the step edge.

Original languageEnglish (US)
Pages (from-to)11433-11436
Number of pages4
JournalPhysical Review B
Volume45
Issue number19
DOIs
StatePublished - 1992
Externally publishedYes

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Vacancies
Defects
defects
interactions
Energy barriers
decay
pressure distribution
Molecular dynamics
molecular dynamics
Computer simulation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Elastic interactions of defects on (111) Au surfaces. / Sieradzki, Karl; Streitz, F. H.

In: Physical Review B, Vol. 45, No. 19, 1992, p. 11433-11436.

Research output: Contribution to journalArticle

Sieradzki, Karl ; Streitz, F. H. / Elastic interactions of defects on (111) Au surfaces. In: Physical Review B. 1992 ; Vol. 45, No. 19. pp. 11433-11436.
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