Formation of ordered arrays of Ag nanowires and nanodots on Si(5 5 7) surface
| Autor: | R. A. Zhachuk, S. A. Teys, A. E. Dolbak, B. Z. Olshanetsky |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Auger electron spectroscopy
Condensed Matter - Materials Science Low-energy electron diffraction Silicon Bilayer Nanowire chemistry.chemical_element Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Surfaces and Interfaces Condensed Matter Physics Surfaces Coatings and Films law.invention Crystallography chemistry Chemical engineering law Materials Chemistry Vacuum chamber Nanodot Scanning tunneling microscope |
| Popis: | The ordered arrays of Ag nanowires and nanodots have been grown in ultra-high vacuum on the Si(5 5 7) surface containing regular steps of three bilayer height. Formation of Ag nanostructures have been studied by scanning tunneling microscopy, low energy electron diffraction and Auger electron spectroscopy at room temperature. It was shown that a sample exposure in the vacuum before Ag growth affects the shape of the forming Ag islands. This effect is caused by oxygen adsorption on the silicon surface from the residual atmosphere in the vacuum chamber. When Ag is deposited on the clean silicon surface the islands, overlapping several (1 1 1) neighboring terraces, form. The arrays of silver nanowires elongated along steps and silver nanodots, arranged in lines parallel to the steps, can be formed on the Si(5 5 7) surface depending on the amount of adsorbed oxygen. |
| Databáze: | OpenAIRE |
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