Dynamic study of a surface-confined alloy in an ultrathin Ag/Pt(111) film

研究成果: 雜誌貢獻期刊論文同行評審

19 引文 斯高帕斯(Scopus)

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
58
發行號7
DOIs
出版狀態已發佈 - 1998
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學

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