Multiple adsorption configurations of NH3 molecules on the Si(001) surface
SCIE
SCOPUS
- Title
- Multiple adsorption configurations of NH3 molecules on the Si(001) surface
- Authors
- Chung, ON; Kim, H; Chung, S; Koo, JY
- Date Issued
- 2006-01
- Publisher
- AMERICAN PHYSICAL SOC
- Abstract
- Initial adsorption configurations of NH3 molecules on the Si(001) surface are studied by using scanning tunneling microscopy (STM) and ab initio pseudopotential calculations. In contrast to the previous consensus of single configuration, we demonstrate that there exist two distinct STM features. One is found to be the existing model of on-dimer configuration, that is characterized by the previously unreported "U-shape" empty-state feature. The other is identified to be NH2 and H adsorbed at the same side of two adjacent dimers along the dimer row. The identification of all the adsorption configurations would be useful for the quantitative analysis of Si nitridation.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12164
- DOI
- 10.1103/PhysRevB.73.033303
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 73, no. 3, 2006-01
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