Adatom
In surface physics , adatom (= ad sorbed atom ) denotes an atom that is bound ( adsorbed ) to a solid surface .
This can mean both foreign atoms and atoms of the same type. The latter are distinguished from the rest of the surface in that they are not included in their main periodicity .
On the other hand, under suitable circumstances, adatoms can in general again result in a clearly defined (periodic) structure, which is also called a superstructure .
In molecular beam epitaxy , the crystal growth is based on the successive accumulation and diffusion of adatoms. A popular example of this is the epitaxial growth of graphs .
literature
- Solid Surfaces, Interfaces and Thin Films , Hans Lüth, Springer-Verlag Berlin Heidelberg 2010 (English).
credentials
- ↑ iopscience.iop.org
- ↑ Thomas Fauster, Lutz Hammer, Klaus Heinz, M. Alexander Schneider: Surface physics: Fundamentals and methods . ACADEMY PUBLISHER, Munich 2013, ISBN 978-3-486-85620-0 , doi : 10.1524 / 9783486856200 ( degruyter.com [accessed on September 3, 2019]).
- ↑ Alpha T. N'Diaye, Sebastian Bleikamp, Peter J. Feibelman, Thomas Michely: Two-Dimensional Ir Cluster Lattice on a Graphene Moiré on Ir (111) . In: Physical Review Letters . tape 97 , no. November 21 , 2006, ISSN 0031-9007 , doi : 10.1103 / PhysRevLett.97.215501 ( aps.org [accessed September 3, 2019]).