Intra-dimer row and inter-dimer row coupling of the vibrational modes of chemisorbed CO on Si(001)-c(4×2) observed by angle-dependent transmission infrared spectroscopy.
J Chem Phys
; 151(7): 074702, 2019 Aug 21.
Article
em En
| MEDLINE
| ID: mdl-31438706
ABSTRACT
The vibrational modes of chemisorbed CO on a Si(001) surface are investigated by means of transmission Fourier-transform infrared absorption spectroscopy. We observed the three components corresponding to the stretching vibration of the terminal-site CO adsorbed on the down-dimer sites of a Si(001) surface. The symmetric stretching vibration and asymmetric stretching vibration are observed separately. This assignment is consistent with the polarization dependence of the incident light and with the vibrational modes obtained by performing theoretical calculations. We found that both the intradimer row and interdimer row coupling should be considered to explain the appearance of the three components.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2019
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Article