期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 8, 页码 1562-1565出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.1562
关键词
-
We report scanning tunneling microscopy observations, which imply that all atoms in a Cu(001) surface move frequently, even at room temperature. Using a low density of embedded indium tracer atoms, we visualize the diffusive motion of surface atoms. Surprisingly, the indium atoms seem to make concerted, long jumps. Responsible fur this, motion is an ultralow density of surface vacancies, diffusing rapidly within the surface. This interpretation is supported by a detailed analysis of the displacement distribution of the indium atoms, which reveals a shape characteristic fur the vacancy mediated diffusion mechanism that we propose.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据