The Importance of Indirect Interactions Between Adatoms for Temperature Dependent Processes on Metal Surface |
| J.M. Rogowska and J. Kołaczkiewicz Institute of Experimental Physics, University of Wrocław, Cybulskiego 36, 50-205 Wroclaw, Poland |
| Received: May 25, 1991; in revised form September 9, 1991 |
| Full Text PDF |
| The asymptotic form of the indirect pseudopotential interaction of noble metal adatoms on jellium is used to interpret the phenomena arising during thermal treatment of the noble metal submonolayers on W(110). It is shown that the 2D condensation is an activated process. The growth of open clusters needs lower activation energy than the close-packed island formation. Therefore the open clusters should predominate at low temperatures and low coverages, as it is observed experimentally. On the basis of calculation of the total energy of submonolayers as a function of coverage Θ the experimental measurement of desorption energy vs. coverage is discussed. |
| DOI: 10.12693/APhysPolA.81.101 PACS numbers: 82.65.Nz, 61.45.+s, 68.90.+g |