Novel (115) faceting induced by Sr adsorbed on Si(114)-2 × 1 with subsurface C
| Autor: | Hidong Kim, Yanghui Kim, Altaibaatar Lkhagvasuren, Rui Zhang, Jae M. Seo |
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| Rok vydání: | 2016 |
| Předmět: |
Alkaline earth metal
Materials science Surface stress Strontium fluoride Mineralogy 02 engineering and technology Surfaces and Interfaces Substrate (electronics) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surfaces Coatings and Films law.invention Faceting chemistry.chemical_compound Crystallography Adsorption chemistry law 0103 physical sciences Materials Chemistry Scanning tunneling microscope Facet 010306 general physics 0210 nano-technology |
| Zdroj: | Surface Science. 651:203-209 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2016.05.001 |
| Popis: | The Sr-induced structural evolution of Si(114)-2 × 1, through depositing SrF2 on the reconstructed surface held at 800 °C, has been investigated by scanning tunneling microscopy. By submonolayer of adsorbed Sr atoms, any well-defined facet besides (113) has not been formed on the clean Si(114)-2 × 1 surface, while a well-ordered and sawtooth-like structure composed of a (113) facet and its compensating (115) facet has been formed on Si(114)-2 × 1 with subsurface C atoms. Such a contrasting result is due to the stress-compensating mechanism between adsorbed Sr atoms and subsurface C atoms making the (115) facet stable. From the present studies, it has been confirmed that a stable and sawtooth-like structure covering the whole surface can be formed by modulating the surface stress even if the high-index surface does not have a pair of stable facets near the direction of the substrate. |
| Databáze: | OpenAIRE |
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