| Abstract: | The adsorption of metals on ionic surfaces takes place on preferential sites and is affected by the presence of defects. In order to provide some theoretical indication concerning electronic energy changes connected with these effects, we have extended previous work A. Julg and M. Bourg, J. Phys. Lett. 43 , L243 (1982)] where Lin clusters embedded in a matrix simulated by point charges had been studied by STO -6G (G-70) calculations. We have treated an Li2 molecule in the presence of an fcc lattice of positive and negative point charges placed at the distances characteristic of an LiF crystal: The perfect surface as well as steps and point defects have been thus simulated. In this article we briefly describe the results obtained. |
