Abstract
During alloy formation of the surface-confined fcc(111) systems, we demonstrate that the energy barrier of diffusion for surface atoms can be determined from a dynamic study of a surface alloy by low-energy electron diffraction. The corresponding energy barrier of (Formula presented) was obtained from data consistent with the results of Monte Carlo simulations in submonolayer Ag/Pt(111) films. Ultrathin Ag film deposited at 360 K shows pseudomorphic growth. Annealing of a submonolayer ultrathin Ag film above 550 K causes formation of a two-dimensional surface alloy. After alloy formation, the vibration of surface atoms is enhanced and the enhancement could be as large as 70%.
| Original language | English |
|---|---|
| Pages (from-to) | 3609-3612 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 58 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1998 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics