MULTIPLE-SCATTERING STUDIES OF ADSORPTION STRUCTURE OF C2D2/Si(111)7×7

The multiple scattering cluster (MSC) method has been employed to perform a theo-retical analysis on carbon 1s near edge X-ray absorption fine structure of the deuteronacetylene (C2D2) adsorbed on Si(111)7× 7 at room temperature. From the MSC study,it is confirmed that the C2D2 molecule is bonded to...

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Veröffentlicht in:	Acta metallurgica sinica : English letters 2002, Vol.15 (2), p.227-232
1. Verfasser:	P. Zhu J.C. Tang S. Cao L. Wang
Format:	Artikel
Sprache:	eng
Schlagworte:	absorption acetylene adsorption cluster deuteron edge fine method multiple near scattering Si7×7 stracture X-ray
Online-Zugang:	Volltext
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Zusammenfassung:	The multiple scattering cluster (MSC) method has been employed to perform a theo-retical analysis on carbon 1s near edge X-ray absorption fine structure of the deuteronacetylene (C2D2) adsorbed on Si(111)7× 7 at room temperature. From the MSC study,it is confirmed that the C2D2 molecule is bonded to a pair of adjacen t Si adatom andSi restatom with C-Si bond length about 0. 18nm. The carbon-deuteron bond is bentaway from the surface andthe CCD bond angle is about 120°. The molecule planetilt slightly away from the surface normal. Compared with C2D2 in gas phase, theC-C bond and C-D bond are elongated by about 0. 03nm and 0. 02nm respectively whenacetylene was adsorbed on the subtrate.
ISSN:	1006-7191 2194-1289