Structural characterization of submonolayer C/Al(111)

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

doi:10.1016/S0039-6028(97)00621-3

Structural characterization of submonolayer C/Al(111)

Author(s)

Scalese, S.

Agostino, R. G.

Hayoz, J.

Naumovic, D.

Fasel, Roman

Aebi, Philipp

Schlapbach, Louis

Date issued

1998

In

Surface Science, Elsevier, 1998/395/1/120-129

Subjects

aluminum carbon diamond diffusion and migration low index single crystal surfaces photoelectron diffraction surface structure

Abstract

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.