The dimers stay intact: a quantitative photoelectron study of the adsorption 
system Si{100} (2x1)-C2H4

Baumgärtel, Peter; Lindsay, Robert; Schaff, Oliver; Gießel, Tatjana; Terborg, Ralf; Hoeft, Jon Tobias; Polcik, Martin; Bradshaw, Alexander M.; Carbone, M.; Piancastelli, M. N.; Zanoni, R.; Toomes, R L; Woodruff, David Phillip

doi:10.1088/1367-2630/1/1/320

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The dimers stay intact: a quantitative photoelectron study of the adsorption system Si{100} (2x1)-C₂H₄

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Baumgärtel, Peter
Fritz Haber Institute, Max Planck Society;

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Lindsay, Robert
Fritz Haber Institute, Max Planck Society;

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Schaff, Oliver
Fritz Haber Institute, Max Planck Society;

/persons/resource/persons249325

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

/persons/resource/persons22162

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

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P_Baumgärtel_1999_New_J._Phys._1_20.pdf
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Citation

Baumgärtel, P., Lindsay, R., Schaff, O., Gießel, T., Terborg, R., Hoeft, J. T., et al. (1999). The dimers stay intact: a quantitative photoelectron study of the adsorption system Si{100} (2x1)-C₂H₄. New Journal of Physics, 1, 20.1-20.15. doi:10.1088/1367-2630/1/1/320.

Cite as: https://hdl.handle.net/21.11116/0000-0008-BC01-3

Abstract

Using the technique of photoelectron diffraction in the scanned energy mode we show that the Si dimer separation on the Si{100} surface following the adsorption of ethene (ethylene) is 2.36(±0.21) Å. This value is only very slightly larger than on the clean surface and shows that the dimer remains intact, thus providing a clear quantitative experimental resolution of a long controversy in the literature. The C-C and C-Si separations are 1.62±0.08 Å and 1.90±0.01 Å, respectively, the former indicating a bond order of less than one.