학술논문
Diffusion Kinetics in the Pd/Cu(001) Surface Alloy
Document Type
Journal Article
Author
Source
Physical Review Letters; Other Information: PBD: 8 Dec 2000
Subject
Language
English
ISSN
0031-9007
Abstract
We use atom-tracking scanning tunneling microscopy to study the diffusion of Pd in the Pd/Cu(001) surface alloy. By following the motion of individual Pd atoms incorporated in the surface, we show that Pd diffuses by a vacancy-exchange, mechanism. We measure an effective activation energy for the diffusion of incorporated Pd atoms of 0.88 eV, which is consistent with an ab initio calculated barrier of 0.94 eV.