Abstract
Phase boundaries between the 7 × 7 and the 5 × 2 Au structures on a Si(111) surface, which were located along the two-fold direction of the 5 × 2 structure, were dynamically studied using high-temperature scanning tunneling microscopy (STM) during Au deposition at 500°C. Two types of stable phase boundaries were observed depending on the growth direction of the 5 × 2 domain. The stable phase boundaries had adatoms of the unfaulted half at the edge of the 7 × 7 side. The formation of an unstable phase boundary was quickly followed by the growth of new rows of the 5 × 2 structure next to the boundary which formed a stable phase boundary. These results suggest that the stacking fault of the 7 × 7 structure at a phase boundary is unstable.
Original language | English |
---|---|
Pages (from-to) | L295-L299 |
Journal | Surface Science |
Volume | 355 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 1996 Jun 1 |
Externally published | Yes |
Keywords
- Gold
- Scanning tunneling microscopy
- Si(111)-5 × 2Au
- Silicon
- Surface reconstruction
- Surface structure
- Surface thermodynamics
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry