Dimers diffusion on (110) (1 x 2) metal surfaces

Authors
Montalenti, F Ferrando, R
Citation
F. Montalenti et R. Ferrando, Dimers diffusion on (110) (1 x 2) metal surfaces, SURF SCI, 432(1-2), 1999, pp. 27-36
Citations number
26
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE SCIENCE
ISSN journal
00396028 → ACNP
Volume
432
Issue
1-2
Year of publication
1999
Pages
27 - 36
Database
ISI
SICI code
0039-6028(19990709)432:1-2<27:DDO((X>2.0.ZU;2-7
Abstract
We study by molecular dynamics Au-2, Cu-2 and AuCu dimers diffusion on the Au(110)(1 x 2) missing-row reconstructed surface. For all these dimers, we found two different diffusion mechanisms: concerted jump and leapfrog. The energy barriers of such mechanisms are investigated and compared with the d imers dissociation barriers. Each of the three dimers exhibits a qualitativ ely different behavior. (C) 1999 Elsevier Science B.V. All rights reserved.