Faculté des sciences

Structural characterization of submonolayer C/Al(111)

Scalese, S. ; Agostino, R. G. ; Hayoz, J. ; Naumovic, D. ; Fasel, Roman ; Aebi, Philipp ; Schlapbach, Louis

In: Surface Science, 1998, vol. 395, no. 1, p. 120-129

We report on the adsorption of atomic C in submonolayer coverages on the Al(111) surface. The local order at the surface is studied for different thermal treatments by means of full-heimispherical X-ray photoelectron diffraction. Deposition at room temperature results in disordered C adsorption while an ordering process takes place after annealing above 475 K. We depict the structure of the... Plus

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    Summary
    We report on the adsorption of atomic C in submonolayer coverages on the Al(111) surface. The local order at the surface is studied for different thermal treatments by means of full-heimispherical X-ray photoelectron diffraction. Deposition at room temperature results in disordered C adsorption while an ordering process takes place after annealing above 475 K. We depict the structure of the annealed C-rich phase. The C1s diffraction patterns are interpreted by comparison with single scattering cluster calculations. The results are discussed with respect to both previous theoretical and experimental work.