期刊
CHEMICAL PHYSICS LETTERS
卷 387, 期 1-3, 页码 95-100出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2004.01.114
关键词
-
We use time dependent density functional theory to study short-time dynamics of the screening of a negative charge suddenly introduced in a free electron gas. The electron gas is modeled with a finite-size jellium cluster. We find that the screening is built-up locally on a time scale well below the femtosecond for typical metallic densities. At this ultrashort time scale, the time evolution is not affected by the cluster boundary conditions, and our results apply to the infinite system as well. The results for different electronic densities can be understood in terms of universal scaling laws. (C) 2004 Elsevier B.V. All rights reserved.
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