TY - JOUR
T1 - Coadsorption of CO and H on Ni(110)
T2 - evidence for a strong local COH interaction
AU - Rangelov, G.
AU - Bischler, U.
AU - Memmel, N.
AU - Bertel, E.
AU - Dose, V.
AU - Pabst, M.
AU - Rösch, N.
N1 - Funding Information:
We are grateful to J. Kiippers who made ref. 1361a, nd to A. M. Bradshawa nd his coworkers who mader ef. [41]a vailablet o us prior to publication. We thank M.L. Hirschinger for technical support. This work has been supported by the Deutsche Forschungsgemeinschatfht rough Son-derforschungsbereic3h3 8 and by the Fonds der ChemischenI ndustrie (NR).
PY - 1992/6/15
Y1 - 1992/6/15
N2 - We have investigated differently prepared coadsorbate layers of H and CO on Ni(110) by thermal desorption, low-energy electron diffraction, ultraviolet photoemission and inverse photoemission. In addition we have carried out cluster calculations in order to model the electronic structure of the mixed COH layer on this surface and to investigate effects of H coadsorption on bond lengths and the corresponding stretching vibrations. We find evidence for a strong local COH interaction. No global H-induced effects, such as d-band filling, need to be invoked for the interpretation of the photoemission spectra. Moreover, neither changes in the long-range order of the coadsorbate layer nor a surface reconstruction seem to profoundly affect the character of the COH interaction. This supports the assumption of a local interaction mechanism.
AB - We have investigated differently prepared coadsorbate layers of H and CO on Ni(110) by thermal desorption, low-energy electron diffraction, ultraviolet photoemission and inverse photoemission. In addition we have carried out cluster calculations in order to model the electronic structure of the mixed COH layer on this surface and to investigate effects of H coadsorption on bond lengths and the corresponding stretching vibrations. We find evidence for a strong local COH interaction. No global H-induced effects, such as d-band filling, need to be invoked for the interpretation of the photoemission spectra. Moreover, neither changes in the long-range order of the coadsorbate layer nor a surface reconstruction seem to profoundly affect the character of the COH interaction. This supports the assumption of a local interaction mechanism.
UR - http://www.scopus.com/inward/record.url?scp=0026880953&partnerID=8YFLogxK
U2 - 10.1016/0039-6028(92)90276-C
DO - 10.1016/0039-6028(92)90276-C
M3 - Article
AN - SCOPUS:0026880953
SN - 0039-6028
VL - 273
SP - 61
EP - 72
JO - Surface Science
JF - Surface Science
IS - 1-2
ER -