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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Física
2004
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=46434405 |
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Inhaltsangabe:
- Adsorption of C2H2C2O3 on Si(001) R. Miotto A. C. Ferraz G. P. Srivastava Física, Astronomía y Matemáticas The adsorption of maleic anhydride on the Si(001) surface was investigated using the first-principles pseudopotentialformalism. Our results indicate that C2H2-C2O3 adsorbs through a [2+2] cycloaddition of the CC bondto the dangling bonds of SiSi dimers, as observed for other small hydrocarbons. According to our calculations,the adsorption of a second maleic anhydride molecule will preferentially occur on first-neighbours SiSidimer sites in either the dimer chain our dimer row, i.e. considering a (4£2) reconstruction, C2H2-C2O3 caneither form a linear chain or a zig-zag chain, depending on the growth conditions. Although both structures arefound to be stable from the energetic point of view, only our STM theoretical images for the linear chain arecomparable to available experimental data. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434405 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2B Vol.34