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Vibrational analysis of the C 1s photoemission spectra from pure ethylidyne and ethylidyne coadsorbed with carbon monoxide on Rh (111)

Wiklund, Stefan LU ; Beutler, A. LU ; Nyholm, R. LU and Andersen, J. N. LU (2000) In Surface Science 461(1-3). p.107-117
Abstract

High-resolution core-level photoemission with a resolution better than the intrinsic width of the C 1s level has been used to study pure and coadsorbed ethylidyne overlayers on Rh(111). Components due to excitation of the C-H stretch vibration are clearly resolved in the C 1s spectra. In addition, a component due to the C-C vibration of the ethylidyne molecules is identified. The asymmetry parameter is found to be similar for the two carbon atoms of the C2H3 molecule, indicating similar densities of states at the Fermi level for the two atoms. Coadsorption of ethylidyne with CO is found to induce a large C 1s binding-energy shift of the outer carbon atom of the ethylidyne. The remaining lineshape parameters,... (More)

High-resolution core-level photoemission with a resolution better than the intrinsic width of the C 1s level has been used to study pure and coadsorbed ethylidyne overlayers on Rh(111). Components due to excitation of the C-H stretch vibration are clearly resolved in the C 1s spectra. In addition, a component due to the C-C vibration of the ethylidyne molecules is identified. The asymmetry parameter is found to be similar for the two carbon atoms of the C2H3 molecule, indicating similar densities of states at the Fermi level for the two atoms. Coadsorption of ethylidyne with CO is found to induce a large C 1s binding-energy shift of the outer carbon atom of the ethylidyne. The remaining lineshape parameters, including the energy splits and intensity ratios of the C-H vibrational progressions, are similar for the pure and coadsorbed ethylidyne. © 2000 Elsevier Science B.V. All rights reserved.

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author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
Carbon monoxide, Chemisorption, Ethylidyne, Low index single crystal surfaces, Rhodium, Synchrotron radiation photoelectron spectroscopy
in
Surface Science
volume
461
issue
1-3
pages
11 pages
publisher
Elsevier
external identifiers
  • Scopus:0000358048
ISSN
0039-6028
language
English
LU publication?
yes
id
916847bf-f4c7-41b8-8de3-9ee7154ca764
date added to LUP
2016-04-27 16:40:56
date last changed
2017-01-15 04:38:17
@article{916847bf-f4c7-41b8-8de3-9ee7154ca764,
  abstract     = {<p>High-resolution core-level photoemission with a resolution better than the intrinsic width of the C 1s level has been used to study pure and coadsorbed ethylidyne overlayers on Rh(111). Components due to excitation of the C-H stretch vibration are clearly resolved in the C 1s spectra. In addition, a component due to the C-C vibration of the ethylidyne molecules is identified. The asymmetry parameter is found to be similar for the two carbon atoms of the C<sub>2</sub>H<sub>3</sub> molecule, indicating similar densities of states at the Fermi level for the two atoms. Coadsorption of ethylidyne with CO is found to induce a large C 1s binding-energy shift of the outer carbon atom of the ethylidyne. The remaining lineshape parameters, including the energy splits and intensity ratios of the C-H vibrational progressions, are similar for the pure and coadsorbed ethylidyne. © 2000 Elsevier Science B.V. All rights reserved.</p>},
  author       = {Wiklund, Stefan and Beutler, A. and Nyholm, R. and Andersen, J. N.},
  issn         = {0039-6028},
  keyword      = {Carbon monoxide,Chemisorption,Ethylidyne,Low index single crystal surfaces,Rhodium,Synchrotron radiation photoelectron spectroscopy},
  language     = {eng},
  month        = {08},
  number       = {1-3},
  pages        = {107--117},
  publisher    = {Elsevier},
  series       = {Surface Science},
  title        = {Vibrational analysis of the C 1s photoemission spectra from pure ethylidyne and ethylidyne coadsorbed with carbon monoxide on Rh (111)},
  volume       = {461},
  year         = {2000},
}