UNSPECIFIED. (2000) Local adsorption geometry of acetylene on Si(100)(2x1). PHYSICAL REVIEW B, 61 (24). pp. 16697-16703. ISSN 1098-0121

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Abstract

Using C 1s scanned-energy-mode photoelectron diffraction the local adsorption geometry of acetylene on the Si(100)(2x1) surface has been determined and the results are compared with those of a similar study of ethylene adsorption on this surface. Both molecules bond to the surface along the Si-Si dimers with the C-C bonds parallel to the surface such that the C atoms are in off-atop sites relative to the Si dimer atoms. In both cases the Si-Si bond length (2.36+/-0.21 Angstrom, for ethylene and 2.44+/-0.58 Angstrom for acetylene) is compatible only with the dimer remaining intact after adsorption and not with the Si-Si distance of an ideally terminated undimerized Si(100) surface (3.84 Angstrom).

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW B
Publisher:	AMER PHYSICAL SOC
ISSN:	1098-0121
Official Date:	15 June 2000
Dates:	Date Event 15 June 2000 UNSPECIFIED
Volume:	61
Number:	24
Number of Pages:	7
Page Range:	pp. 16697-16703
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/13231

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