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The surface structure of the disordered overlayer formed by ethylene adsorption on Pd(111) at 80 K is determined by low-energy electron diffraction (LEED) from the effects of chemisorbed molecules on the intensity versus beam energy (I/E) variation of the substrate (1x1) Bragg spots. It is shown that ethylene is di-σ-bonded on clean Pd(111), where the measured geometry is in agreement with the results...
We examine the effects of chemisorbed organic molecules on the intensity versus beam energy (I/E) variation of the substrate (1x1) Bragg spots in low energy electron diffraction (LEED). We find that these integer-order spots alone can provide important information about the local geometries of the molecules on the surface, largely independent of the degree of long-range order of an adsorbate overlayer...
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