One-dimensional diffusion of Pb atoms on the Si(553)-Au surface |
| |
Authors: | Nita P Jałochowski M Krawiec M Stȩpniak A |
| |
Institution: | Institute of Physics, Maria Curie-Sk?odowska University, Place M. Curie-Sk?odowskiej 1, PL-20031 Lublin, Poland. |
| |
Abstract: | One-dimensional diffusion along long atomic chains of the Si(553)-Au surface is studied with scanning tunneling microscopy. Ab initio calculations reveal aligned preferential adsorption sites between Si step edge atomic chain and double Au atomic chain on each terrace. At 220 K the Pb atoms hop between shallow potential basins forming a potential groove and move parallel to the atomic chains. By combining the results of measurements with the model calculations of the Pb atoms static energy on the Si(553)-Au surface the attempt frequency ν? is determined. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|