Abstract
Room-temperature scanning tunneling microscopy is utilized to explore the consequences of a single covalent bond formed between an organic molecule, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), and the Si(111)-7 × 7 surface at the atomic scale. Upon binding, both topographic imaging and spectroscopic techniques reveal significant charge rearrangement within the substrate that is delocalized from the organic adsorbate. With scanning tunneling spectroscopy, the spatial extent of this charge transfer is directly visualized and determined to extend up to 2 nm from the molecule predominately within half of the Si(111)-7 × 7 unit cell. Analysis of individual differential tunneling conductance spectra suggests that the charge transfer is mediated by the back-bonds of the silicon substrate.
| Original language | English |
|---|---|
| Pages (from-to) | 2116-2120 |
| Number of pages | 5 |
| Journal | Journal of Physical Chemistry C |
| Volume | 112 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Feb 14 2008 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
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Subnanometer imaging of adsorbate-induced electronic structure perturbation on silicon surfaces. / Guisinger, N. P.; Yoder, N. L.; Elder, S. P.; Hersam, Mark C.
In: Journal of Physical Chemistry C, Vol. 112, No. 6, 14.02.2008, p. 2116-2120.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Subnanometer imaging of adsorbate-induced electronic structure perturbation on silicon surfaces
AU - Guisinger, N. P.
AU - Yoder, N. L.
AU - Elder, S. P.
AU - Hersam, Mark C
PY - 2008/2/14
Y1 - 2008/2/14
N2 - Room-temperature scanning tunneling microscopy is utilized to explore the consequences of a single covalent bond formed between an organic molecule, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), and the Si(111)-7 × 7 surface at the atomic scale. Upon binding, both topographic imaging and spectroscopic techniques reveal significant charge rearrangement within the substrate that is delocalized from the organic adsorbate. With scanning tunneling spectroscopy, the spatial extent of this charge transfer is directly visualized and determined to extend up to 2 nm from the molecule predominately within half of the Si(111)-7 × 7 unit cell. Analysis of individual differential tunneling conductance spectra suggests that the charge transfer is mediated by the back-bonds of the silicon substrate.
AB - Room-temperature scanning tunneling microscopy is utilized to explore the consequences of a single covalent bond formed between an organic molecule, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), and the Si(111)-7 × 7 surface at the atomic scale. Upon binding, both topographic imaging and spectroscopic techniques reveal significant charge rearrangement within the substrate that is delocalized from the organic adsorbate. With scanning tunneling spectroscopy, the spatial extent of this charge transfer is directly visualized and determined to extend up to 2 nm from the molecule predominately within half of the Si(111)-7 × 7 unit cell. Analysis of individual differential tunneling conductance spectra suggests that the charge transfer is mediated by the back-bonds of the silicon substrate.
UR - http://www.scopus.com/inward/record.url?scp=40049099673&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=40049099673&partnerID=8YFLogxK
U2 - 10.1021/jp709765x
DO - 10.1021/jp709765x
M3 - Article
VL - 112
SP - 2116
EP - 2120
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 6
ER -