Details
| Original language | English |
|---|---|
| Article number | 014706 |
| Journal | Journal of Chemical Physics |
| Volume | 124 |
| Issue number | 1 |
| Publication status | Published - 4 Jan 2006 |
Abstract
The evolution of the structure of the adlayers and the substrate during adsorption of K and coadsorption of K and O on Rh(110) is studied by scanning tunneling microscopy and low-energy electron diffraction. The K adsorption at temperature above 450 K leads to consecutive (1×4), (1×3), and (1×2) missing-row reconstructions for coverage up to 0.12 ML, which revert back to (1×3) and (1×4) with increasing coverage up to 0.21 ML. The coadsorption of different oxygen amount at T>450 K and eventually following reduction-reoxidation cycles led to a wealth of coadsorbate structures, all involving substrate missing-row-type reconstructions, some including segmentation of Rh rows along the [110] direction. The presence of K stabilizes the (1×2) missing-row reconstruction, which facilitates the formation of a great variety of very open (10×2)-type reconstructions at high oxygen coverage, not observed in the single adsorbate systems.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of Chemical Physics, Vol. 124, No. 1, 014706, 04.01.2006.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - K and mixed K+O adlayers on Rh(110)
AU - Günther, S.
AU - Hoyer, R.
AU - Marbach, H.
AU - Imbihl, R.
AU - Esch, F.
AU - Africh, C.
AU - Comelli, G.
AU - Kiskinova, M.
N1 - Funding Information: One of the authors (M.K.) thanks AvH foundation for the Award to pursue research in Germany in 2004-2005. S. Lizzit and A. Baraldi are acknowledged for fruitful discussions. The EU is acknowledged for financial support under Contract No. NMP3-CT-2003-505670 (NANO2) and 13 project IA-SFS.
PY - 2006/1/4
Y1 - 2006/1/4
N2 - The evolution of the structure of the adlayers and the substrate during adsorption of K and coadsorption of K and O on Rh(110) is studied by scanning tunneling microscopy and low-energy electron diffraction. The K adsorption at temperature above 450 K leads to consecutive (1×4), (1×3), and (1×2) missing-row reconstructions for coverage up to 0.12 ML, which revert back to (1×3) and (1×4) with increasing coverage up to 0.21 ML. The coadsorption of different oxygen amount at T>450 K and eventually following reduction-reoxidation cycles led to a wealth of coadsorbate structures, all involving substrate missing-row-type reconstructions, some including segmentation of Rh rows along the [110] direction. The presence of K stabilizes the (1×2) missing-row reconstruction, which facilitates the formation of a great variety of very open (10×2)-type reconstructions at high oxygen coverage, not observed in the single adsorbate systems.
AB - The evolution of the structure of the adlayers and the substrate during adsorption of K and coadsorption of K and O on Rh(110) is studied by scanning tunneling microscopy and low-energy electron diffraction. The K adsorption at temperature above 450 K leads to consecutive (1×4), (1×3), and (1×2) missing-row reconstructions for coverage up to 0.12 ML, which revert back to (1×3) and (1×4) with increasing coverage up to 0.21 ML. The coadsorption of different oxygen amount at T>450 K and eventually following reduction-reoxidation cycles led to a wealth of coadsorbate structures, all involving substrate missing-row-type reconstructions, some including segmentation of Rh rows along the [110] direction. The presence of K stabilizes the (1×2) missing-row reconstruction, which facilitates the formation of a great variety of very open (10×2)-type reconstructions at high oxygen coverage, not observed in the single adsorbate systems.
UR - http://www.scopus.com/inward/record.url?scp=34547926335&partnerID=8YFLogxK
U2 - 10.1063/1.2140693
DO - 10.1063/1.2140693
M3 - Article
AN - SCOPUS:34547926335
VL - 124
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 1
M1 - 014706
ER -