Abstract
Alkali metal (Cs/K) adsorption on the Si(111)7 × 7 and Si(100)2 × 1 surfaces was investigated with the FI-STM. At the initial coverage on the Si(111)7 × 7 surface, Cs(K) atoms adsorb at the on-top site of the center adatoms and are almost completely ionized. When heated at 300° C, a new 1 × 3 phase with misfit defects is formed. On the Si(100)2 × 1 surface, Cs atoms occupy the off-centered valley bridge site at the initial coverage. These results, together with Li/K adsorption, can be well understood based on the strong interaction between the directional Si dangling bonds and active alkali metal atoms.
Original language | English |
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Pages (from-to) | 189-194 |
Number of pages | 6 |
Journal | Surface Science |
Volume | 246 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 1991 Apr 3 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry