Adsorption of small hydrocarbon molecules on Si surfaces: Ethylene on Si(001) - Archive ouverte HAL
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2008

Adsorption of small hydrocarbon molecules on Si surfaces: Ethylene on Si(001)

Margherita Marsili
  • Fonction : Auteur
Nadine Witkowski
Olivia Pulci
  • Fonction : Auteur
Olivier Pluchery
P. L. Silvestrelli
  • Fonction : Auteur
Yves Borensztein

Résumé

The interaction between small unsaturated hydrocarbon molecules of C2H4 with a vicinal silicon 001 surface is studied by means of reflectance anisotropy spectroscopy and analyzed with first principles calculations. Our results confirm that ethylene adsorbs without breaking the silicon dimers. Comparison of theoretical optical spectra with experimental data shows that the C2H4 molecules lay on top of the silicon dimers from low to high coverage. This occurs even though, from a purely energetic point of view, a bridge configuration would be favorable at 1 monolayer coverage.
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Dates et versions

hal-00387590 , version 1 (25-05-2009)

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Citer

Margherita Marsili, Nadine Witkowski, Olivia Pulci, Olivier Pluchery, P. L. Silvestrelli, et al.. Adsorption of small hydrocarbon molecules on Si surfaces: Ethylene on Si(001). Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2008, 77, pp.125337. ⟨10.1103/PhysRevB.77.125337⟩. ⟨hal-00387590⟩
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