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Journal Article

Local adsorption geometry of acetylene on Si(100)(2×1)

MPS-Authors
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Terborg,  Ralf
Fritz Haber Institute, Max Planck Society;

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Baumgärtel,  Peter
Fritz Haber Institute, Max Planck Society;

/persons/resource/persons247982

Lindsay,  Robert
Fritz Haber Institute, Max Planck Society;

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Schaff,  Oliver
Fritz Haber Institute, Max Planck Society;

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Gießel,  Tatjana
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Hoeft,  Jon Tobias
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Polcik,  Martin
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Kulkarni,  S.
Fritz Haber Institute, Max Planck Society;
Physics Department, University of Pune;

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Bradshaw,  Alexander M.
Fritz Haber Institute, Max Planck Society;

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PhysRevB.61.16697.pdf
(Publisher version), 323KB

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Citation

Terborg, R., Baumgärtel, P., Lindsay, R., Schaff, O., Gießel, T., Hoeft, J. T., et al. (2000). Local adsorption geometry of acetylene on Si(100)(2×1). Physical Review B, 61(24), 16697-16703. doi:10.1103/PhysRevB.61.16697.


Cite as: https://hdl.handle.net/21.11116/0000-0009-3E47-3
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 Å for ethylene and 2.44±0.58 Å 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 Å).