Creation of an atomic superlattice by immersing metallic adatoms in a two-dimensional electron sea |
| |
Authors: | Silly Fabien Pivetta Marina Ternes Markus Patthey François Pelz Jonathan P Schneider Wolf-Dieter |
| |
Institution: | Institut de Physique des Nanostructures, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. |
| |
Abstract: | Cerium adatoms, deposited on a Ag(111) surface, are found by low-temperature scanning tunneling microscopy to self-assemble into large ordered hexagonal arrays covering macroscopically the entire surface. We show that the 32 A periodicity of the superlattice is caused by the interaction of surface-state electrons with Ce adatoms and that the large-scale formation of the superlattice is governed by a subtle balance between the sample temperature, the surface diffusion barrier, and the concentration-dependent adatom interaction potential. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|