|
|||||
|
|
Surface alloying and anomalous diffusion of Bi on Cu(1 1 1) |
|
| Authors: | R. van Gastel D. Kaminski E. Vlieg |
| Affiliation: | a MESA+ Institute for Nanotechnology, Solid State Physics, University of Twente, P.O. Box 217, NL-7500 AE, Enschede, The Netherlands b IMM, Solid State Chemistry, Radboud University Nijmegen, Heyendaalseweg 135 NL-6525 AJ, Nijmegen, The Netherlands c Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland |
| Abstract: | We have used Low-Energy Electron Microscopy (LEEM) to study the formation and structure of the surface alloy of Bi on the Cu(1 1 1) surface. As a function of Bi coverage we find a progression from a dilute surface alloy to a  structure, which coexists with a Bi overlayer when the Bi coverage exceeds 1/3 ML. At a temperature of 401 K, an unusual formation of alloy domains is observed. The origin of this effect is traced down to the mobility of Bi adatoms, which is found to strongly depend on the Bi coverage of the surface alloy on which they reside. |
| Keywords: | Low-Energy Electron Microscopy (LEEM) Bismuth Copper Surface structure Morphology Roughness and topography Epitaxy |
| 本文献已被 ScienceDirect 等数据库收录！ | |