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 language | English (US) |
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Pages (from-to) | L367-L372 |
Journal | Surface Science |
Volume | 157 |
Issue number | 1 |
DOIs | |
State | Published - Jul 1 1985 |
Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry