Interaction of Ag with the Si(111)1 x 1-H surface
SCIE
SCOPUS
- Title
- Interaction of Ag with the Si(111)1 x 1-H surface
- Authors
- Han, JH; Hwang, HN; Jee, HG; Kim, B; Chung, S; Kim, YD; Hwang, CC
- Date Issued
- 2010-05-15
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Synchrotron radiation based photoemission spectroscopy (SRPES) and low energy electron diffraction (LEED) are used to study the interaction between Ag atoms and the Si(1 1 1)1 x 1-H surface. At an Ag coverage of 0.063 monolayers (ML) on the Si(1 1 1)1 x 1-H surface, the Si 2p component corresponding to Si-H bonds decreases, and an additional Si 2p component appears which shifts to a lower binding energy by 109 meV with respect to the Si bulk peak. The new Si 2p component is also observed for 0.25 ML Ag on the Si(1 1 1)7 x 7 surface. These findings suggest that Ag atoms replace the H atoms of the Si(1 1 1)1 x 1-H surface and form direct Ag-Si bonds. Contrary to the widely accepted view that there is no chemical interaction between Ag particles and the H-passivated Si surface, these results are in good agreement with recent first-principles calculations. (C) 2010 Elsevier B.V. All rights reserved.
- Keywords
- Silver atoms; Si(111)1 x 1-H surface; Ag-Si bonds; Synchrotron radiation based photoemission spectroscopy; Low energy electron diffraction; ATOMIC-HYDROGEN; GROWTH; SILVER; ADSORPTION; DIFFUSION; INTERFACE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25386
- DOI
- 10.1016/J.SUSC.2010.02.010
- ISSN
- 0039-6028
- Article Type
- Article
- Citation
- SURFACE SCIENCE, vol. 604, no. 9, page. 853 - 856, 2010-05-15
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