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Adsorption of Hydrogen on Rhodium (110)
Abstract The adsorption of H on clean Rh(110) includes a number of structural features. Not only are there several adsorption structures being observed, moreover, H appears to influence the surface interatomic forces so as to reduce relaxation and presumably also to cause reconstruction. In a recent paper this interesting hydrogen-metal-system was first shown to display a sequence of five commensurate structures (1×3-H, 1×2-H, 1×3-2H, 1×2-3H and 1×1-2H) with increasing coverage whereby the last one corresponds to a saturated hydrogen monolayer with a 1×1 LEED pattern and two H-atoms per unit mesh /1/. The first structure determination following the above observations was performed by LEED intensity analysis for the clean Rh(110)1×1 surface as well as for the 1×1-2H phase /2, 6/, and as a result multilayer relaxation is almost removed by the influence of the hydrogen layer. It is interesting to compare the 2×1-2H structure on Ni(110) where a modification of the surface relaxation was also reported /3/.
Adsorption of Hydrogen on Rhodium (110)
Abstract The adsorption of H on clean Rh(110) includes a number of structural features. Not only are there several adsorption structures being observed, moreover, H appears to influence the surface interatomic forces so as to reduce relaxation and presumably also to cause reconstruction. In a recent paper this interesting hydrogen-metal-system was first shown to display a sequence of five commensurate structures (1×3-H, 1×2-H, 1×3-2H, 1×2-3H and 1×1-2H) with increasing coverage whereby the last one corresponds to a saturated hydrogen monolayer with a 1×1 LEED pattern and two H-atoms per unit mesh /1/. The first structure determination following the above observations was performed by LEED intensity analysis for the clean Rh(110)1×1 surface as well as for the 1×1-2H phase /2, 6/, and as a result multilayer relaxation is almost removed by the influence of the hydrogen layer. It is interesting to compare the 2×1-2H structure on Ni(110) where a modification of the surface relaxation was also reported /3/.
Adsorption of Hydrogen on Rhodium (110)
Nichtl, W. (author) / Hammer, L. (author) / Müller, K. (author) / Bickel, N. (author) / Heinz, K. (author) / Christmann, K. (author) / Ehsasi, M. (author)
1988-01-01
6 pages
Article/Chapter (Book)
Electronic Resource
English
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