Abstract
D2 temperature-programmed desorption (TPD) was used to probe the structure of the Si(011)-(16 × 2) surface. Deuterium was adsorbed at 200°C to coverages θD ranging up to complete saturation (approximately 1.1 ML) and the sample heated at 5 Cs-1. TPD spectra exhibited three second-order desorption peaks labelled β2, β*1 and β1, centered at 430, 520 and 550°C. Of the proposed models for the Si(011)-(16 × 2) reconstruction, the present TPD results as a function of θD provide support for the adatom/dimer model with the β2 peak assigned to D2 desorption from the dihydride phase, while the β*1 and β1 peaks arise from adatom and surface-atom monohydride phases.
Original language | English (US) |
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Pages (from-to) | L496-L500 |
Journal | Surface Science |
Volume | 380 |
Issue number | 2-3 |
DOIs | |
State | Published - May 15 1997 |
Keywords
- Adatoms
- Deuterium
- Silicon
- Surface relaxation and reconstruction
- Thermal desorption spectroscopy
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry