| Autor: |
D E, Starr, J T, Ranney, J H, Larsen, J E, Musgrove, C T, Campbell |
| Rok vydání: |
2000 |
| Zdroj: |
Physical review letters. 87(10) |
| ISSN: |
0031-9007 |
| Popis: |
The first direct calorimetric measurements of the energetics of metal film growth on a semiconductor surface are presented. The heat of adsorption of Ag on Si(100)-(2 x 1) at 300 K decreases from approximately 347 to 246 kJ/mol with coverage in the first monolayer (ML) due to overlap of substrate strain from nearby Ag islands. It then rises quickly toward the bulk sublimation enthalpy (285 kJ/mol) as 3D particles grow. A wetting layer grows to 1.0 ML, but is metastable above approximately 0.55 ML and dewets when kinetics permit. This may be common when adsorbate islands induce a large strain in the substrate surface nearby. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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