Adatom pairing structures for Ge on Si(100): The initial stage of island formation
- Univ. of Wisconsin, Madison, WI (United States)
With the use of scanning tunneling microscopy, it is shown that germanium atoms adsorbed on the (100) surface of silicon near room temperature form chainlike structures that are tilted from the substrate dimer bond direction and that consist of two-atom units arranged in adjoining substrate troughs. These units are distinctly different from surface dimers. They may provide the link missing in our understanding of the elementary processes in epitaxial film growth: the step between monomer adsorption and the initial formation of two-dimensional growth islands.
- OSTI ID:
- 569324
- Journal Information:
- Science, Journal Name: Science Journal Issue: 5342 Vol. 278; ISSN SCIEAS; ISSN 0036-8075
- Country of Publication:
- United States
- Language:
- English
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