Direct atomic imaging of solid surfaces. IV. Dislocations on Au(100)

L. D. Marks, David J. Smith

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Direct observation of the metastable gold (100) 1 X 1 surface by high resolution electron microscopy provides evidence for surface Shockley partial dislocations. This result is correlated with the known 5 X 20 reconstruction to a hexagonal overlayer since the dislocations possess a pseudo-hexagonal core structure. This implies a dislocation mechanism for the phase transformation from 1 X 1 to 5 X 20. It is proposed that pipe diffusion along the dislocation cores or mass transport via dislocation glide or climb could explain the rapid atomic migration required during the phase transition from 1 X 1 to hexagonal.

Original languageEnglish (US)
Pages (from-to)L367-L372
JournalSurface Science
Volume157
Issue number1
DOIs
StatePublished - Jul 1 1985
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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