Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/1365
Title: | Influence of germanium ad-dimers on carbon incorporation in the si(001) surface |
Authors: | Sonnet, Ph Stauffer, Louise Kelires, Pantelis C. |
metadata.dc.contributor.other: | Κελίρης, Παντελής |
Major Field of Science: | Engineering and Technology |
Field Category: | ENGINEERING AND TECHNOLOGY |
Keywords: | Carbon;Germanium;Adsorption;Orientation;Molecular dynamics |
Issue Date: | 2-Dec-2004 |
Source: | Physical Review B - Condensed Matter and Materials Physics, 2004, vol. 70, no. 23, pp. 1-5 |
Volume: | 70 |
Issue: | 23 |
Start page: | 1 |
End page: | 5 |
Journal: | Physical Review B |
Abstract: | We present a theoretical study of the influence of germanium ad-dimers on carbon incorporation in the Si(001) surface. Our ab initio energetic calculations show that the presence of a germanium ad-dimer clearly improves the single-carbon-atom penetration in the Si(001) subsurface layers with respect to the defectless surface. The energetic barrier observed in the case of the defectless Si(001) surface has disappeared, and the third-layer α sites are largely favored. Comparing our results to those obtained in the presence of silicon ad-dimers, we notice roughly similar trends, but our study emphasizes the role of the chemical nature of the ad-dimer following its orientation. On the other hand, the size difference between the germanium and silicon atoms in the ad-dimers is found to be of less importance. We eventually show that parameters such as the chemical nature, orientation, and location of the ad-dimers can be adequately monitored to improve carbon penetration in the Si(001) surface and allow a better control of the carbon atom positions in the subsurface layers. |
URI: | https://hdl.handle.net/20.500.14279/1365 |
ISSN: | 10980121 |
DOI: | 10.1103/PhysRevB.70.235303 |
Rights: | © The American Physical Society. Attribution-NonCommercial-NoDerivs 3.0 United States |
Type: | Article |
Affiliation: | University of Crete |
Affiliation : | University of Crete |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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