Kinetic and Thermodynamic Control by Chemical Bond Rearrangement on a Si(001) Surface

Towards hybrid silicon-organic molecular electronics: The stability of acetone on the Si(001) surface

“…Our STM experiments, in agreement with Hamai et al [3], show that the most common adsorbate species seen after acetone dosing at room temperature is a bright protrusion located above a Si-Si dimer (although we find that it is not quite symmetrical about the dimer row). Unlike Hamai et al [3], however, we find that there are two adsorbate species that are asymmetric with respect to the dimer rows.…”

“…Unlike Hamai et al [3], however, we find that there are two adsorbate species that are asymmetric with respect to the dimer rows. In the remainder of this paper, we will discuss recent experiments and calculations being performed to unambiguously identify each of the STM features.…”

“…The protrusion of feature B is seen to be located between two dimers, while the protrusion of feature C is located at the site of a single dimer and exhibits a dimer sized depression on the adjacent dimer. By comparing our features with those reported by Hamai et al [3], we note that our feature A can be readily attributed to the bright protrusion observed by them. Hamai et al [3] also report a second feature which has a small asymmetric protrusion and a small depression, and suggest that this feature can be attributed to the dissociation species shown schematically in Fig.…”

“…In this paper, we present results of a combined STM/DFT study of the interaction of acetone ((CH 3 ) 2 CO; Fig. 1a) with the Si(0 0 1) surface, and highlight some agreements and contradictions with previous studies [2,3].…”

“…More recently, Hamai et al [3] have studied the adsorption of acetone on Si(0 0 1) using a combination of STM, DFT calculations, XPS and Fourier transform infrared spectroscopy (FTIR). Like Armstrong et al, these authors reported the absence of any carbonyl C@O peaks in their FTIR spectra and thereby concluded that the adsorption of acetone occurs via a disruption to this bond.…”