| Autor: |
N T, Kinahan, D E, Meehan, T, Narushima, S, Sachert, J J, Boland, K, Miki |
| Rok vydání: |
2009 |
| Zdroj: |
Physical review letters. 104(14) |
| ISSN: |
1079-7114 |
| Popis: |
The reaction of molecular oxygen with the Si(111)-7 x 7 surface is investigated at room temperature using in situ scanning tunneling microscopy and surface stress measurements to reveal the quantitative relationship between site-specific oxygen coverage and a decrease in tensile surface stress. This relationship is described using a modified form of the reaction model originally proposed by Dujardin et al. We show that the decrease in tensile surface stress is greatest for the faulted subunits of the 7 x 7 cell and determine the stress signatures of different reaction products, including the absence of long-lived metastable species with a unique stress signature. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
