Abstract
Unenhanced, non-resonant Raman spectra of a H-terminated vicinal Si(111) surface, Si[6(111)-(112)], with dihydride-terminated bilayer steps have been measured. All four SiH stretches (and a ≈4% ML kink-defect mode) can be observed if both the excitation and detection geometries are favorable. A method for extracting the orientation of adsorbates using polarized, angle-resolved Raman scattering is presented. Assuming the C1 mode corresponds to a localized SiH stretch, the step dihydride is found to be rotated 37 ± 4° away from the surface normal. This value is in agreement with recent ab initio cluster calculations.
| Original language | English |
|---|---|
| Pages (from-to) | 183-191 |
| Number of pages | 9 |
| Journal | Journal of Electron Spectroscopy and Related Phenomena |
| Volume | 64-65 |
| Issue number | C |
| DOIs | |
| Publication status | Published - Dec 12 1993 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Spectroscopy
- Atomic and Molecular Physics, and Optics
- Surfaces and Interfaces
Cite this
Looking up the down staircase : Surface Raman spectroscopy as a probe of adsorbate orientation. / Hines, Melissa A.; Harris, Timothy D.; Harris, Alex; Chabal, Yves J.
In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 64-65, No. C, 12.12.1993, p. 183-191.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Looking up the down staircase
T2 - Surface Raman spectroscopy as a probe of adsorbate orientation
AU - Hines, Melissa A.
AU - Harris, Timothy D.
AU - Harris, Alex
AU - Chabal, Yves J.
PY - 1993/12/12
Y1 - 1993/12/12
N2 - Unenhanced, non-resonant Raman spectra of a H-terminated vicinal Si(111) surface, Si[6(111)-(112)], with dihydride-terminated bilayer steps have been measured. All four SiH stretches (and a ≈4% ML kink-defect mode) can be observed if both the excitation and detection geometries are favorable. A method for extracting the orientation of adsorbates using polarized, angle-resolved Raman scattering is presented. Assuming the C1 mode corresponds to a localized SiH stretch, the step dihydride is found to be rotated 37 ± 4° away from the surface normal. This value is in agreement with recent ab initio cluster calculations.
AB - Unenhanced, non-resonant Raman spectra of a H-terminated vicinal Si(111) surface, Si[6(111)-(112)], with dihydride-terminated bilayer steps have been measured. All four SiH stretches (and a ≈4% ML kink-defect mode) can be observed if both the excitation and detection geometries are favorable. A method for extracting the orientation of adsorbates using polarized, angle-resolved Raman scattering is presented. Assuming the C1 mode corresponds to a localized SiH stretch, the step dihydride is found to be rotated 37 ± 4° away from the surface normal. This value is in agreement with recent ab initio cluster calculations.
UR - http://www.scopus.com/inward/record.url?scp=0008829016&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0008829016&partnerID=8YFLogxK
U2 - 10.1016/0368-2048(93)80078-Z
DO - 10.1016/0368-2048(93)80078-Z
M3 - Article
AN - SCOPUS:0008829016
VL - 64-65
SP - 183
EP - 191
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
SN - 0368-2048
IS - C
ER -