| Issue |
Europhys. Lett.
Volume 74, Number 6, June 2006
|
|
|---|---|---|
| Page(s) | 1032 - 1038 | |
| Section | Condensed matter: structural, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2006-10050-8 | |
| Published online | 12 May 2006 | |
Polarization-dependent resonant anomalous surface X-ray scattering
of 
1
Argonne National Laboratory, Materials Science Division 9700 S. Cass Ave., Argonne, IL 60439, USA
2
Argonne National Laboratory, Experimental Facility Division 9700 S. Cass Ave., Argonne, IL 60439, USA
3
University of Washington, Department of Physics P.O. Box 351560, Seattle, WA 98195, USA
Received:
24
January
2006
Accepted:
19
April
2006
Polarization dependence of resonant anomalous surface X-ray
scattering (RASXS) was studied for interfaces buried in
electrolytes and in high-pressure gas. We find that RASXS exhibits
strong polarization dependence when the surface is only slightly
modified by adsorption of light elements such as carbon monoxide on
platinum surfaces. 
- and π-polarization RASXS data were
simulated with the latest version of ab initio multiple
scattering calculations (FEFF8.2). Based on the simulation, we find
that Pt layer to C distances in the (
)-3
structure are 
and 
for atop
and 3-fold , respectively. Some considerations
are presented for the origin of the polarization dependence in
RASXS.
PACS: 61.10.-i – X-ray diffraction and scattering / 68.35.Ct – Interface structure and roughness / 82.45.Jn – Surface structure, reactivity and catalysis
© EDP Sciences, 2006
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