摘要
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%.
原文 | 英語 |
---|---|
頁(從 - 到) | 3609-3612 |
頁數 | 4 |
期刊 | Physical Review B - Condensed Matter and Materials Physics |
卷 | 58 |
發行號 | 7 |
DOIs | |
出版狀態 | 已發佈 - 1998 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 電子、光磁材料
- 凝聚態物理學