Universität zu Köln

Wall, D., Lohmar, I., Roos, K. R., Krug, J., Horn-von Hoegen, M. and Heringdorf, F-J Meyer Zu (2010). Imaging diffusion fields on a surface with multiple reconstructions: Ag/Si(111). New J. Phys., 12. BRISTOL: IOP PUBLISHING LTD. ISSN 1367-2630

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Abstract

Photoemission electron microscopy is used for studying the thermal decay of Ag islands grown epitaxially on a Si(111) surface. During the decay, the islands feed adatoms to the surrounding surface. The adatoms diffuse and eventually desorb, resulting in a radial coverage gradient that induces the formation of two concentric reconstructed zones, namely (root 3 x root 3)-R30 degrees and (3 x 1), around each island. We have developed a diffusion model to describe this multizone formation and demonstrate how diffusion constants can be determined for different reconstructed phases in a simple experiment.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wall, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lohmar, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Roos, K. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Krug, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Horn-von Hoegen, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heringdorf, F-J Meyer Zu UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-494301
DOI:	10.1088/1367-2630/12/10/103019
Journal or Publication Title:	New J. Phys.
Volume:	12
Date:	2010
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1367-2630
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language AG; SI(111); COVERAGE; LAYER Multiple languages Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49430