| Autor: | Josef Mysliveček, Pavel Kocán, T. Jarolímek, Pavel Sobotík, I. Ošťádal |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Surface diffusion
Materials science Monte Carlo method General Physics and Astronomy Nanotechnology Molecular physics law.invention Metal Condensed Matter::Materials Science law visual_art Atom visual_art.visual_art_medium Kinetic Monte Carlo Diffusion (business) Scanning tunneling microscope Surface reconstruction |
| Zdroj: | Czechoslovak Journal of Physics. 53:69-74 |
| ISSN: | 0011-4626 |
| DOI: | 10.1023/a:1022359705138 |
| Popis: | Surface diffusion is one of the basic processes determining morphology of a growing film. In the case of metal heteroepitaxy on Si(111)-(7X7) the diffusion is strongly affected by the presence of surface reconstruction, which introduces additional constraints into the motion of deposited atoms. To determine diffusion parameters we used two different approaches: i) interpretation of experimentally observed morphologies by a coarse-grained kinetic Monte Carlo model, ii) direct observation of adatom movement using UHV STM. The attempt frequency and the barrier to hopping of a single Ag atom between half-unit cells of the reconstruction were estimated in both cases. Obtained values are compared and discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink