Ultra thin Al film on the W(110) surface

초록

We have investigated the surface structure of the Al/W(110) surface using low energy electron diffraction (LEED) and low energy ion scattering spectroscopy (ISS). We observe a p(2 x 1) double domain LEED image for the 0.5 ML Al/W(110) surface at annealing temperature 850 degrees C. We found that 0.5 ML Al atoms cover on the W(110) surface uniformly but do not form 3 or 2-dimensional islands. We also measured the Al adsorption site at the Al/W(110)-p(2 x 1) surface using ISS. We found that Al atoms adsorbed at the center of the bridge site. The height of the adsorbed Al atoms is determined to be 2.18 +/- 0.15 angstrom above the W surface layer. (C) 2010 Elsevier B.V. All rights reserved.

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