Electronic and geometric structure of chromium clusters deposited onto Ru(001) studied by soft X-ray absorption spectroscopy

Authors
Lau, JT Achleitner, A Wurth, W
Citation
Jt. Lau et al., Electronic and geometric structure of chromium clusters deposited onto Ru(001) studied by soft X-ray absorption spectroscopy, SURF SCI, 467(1-3), 2000, pp. L834-L840
Citations number
19
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE SCIENCE
ISSN journal
00396028 → ACNP
Volume
467
Issue
1-3
Year of publication
2000
Pages
L834 - L840
Database
ISI
SICI code
0039-6028(20001110)467:1-3<L834:EAGSOC>2.0.ZU;2-O
Abstract
Small, size-selected Cr, clusters deposited onto Ru(001) have been studied by soft X-ray absorption spectroscopy. Broad, bulk-like L-3 absorption line shapes are observed for all clusters. Sizeable shifts in X-ray absorption energy after flash heating are indicative of diffusion or surface alloying. Pure Cr-n clusters can be easily oxidised, yielding Cr2O3-like X-ray absor ption signals. The results are discussed in comparison to Cr-n clusters dep osited onto (1 x 1)O/Ru(001). (C) 2000 Elsevier Science B.V. All rights res erved.