Accession Number : ADA116445

Title :   Calculations of Surface Binding and Mobility of Adatoms.

Descriptive Note : Final rept.,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY NY DEPT OF PHYSICS

Personal Author(s) : Huntington,H B

PDF Url : ADA116445

Report Date : 23 Jun 1982

Pagination or Media Count : 11

Abstract : Theoretical calculations are developed to explore the behavior of adatoms on the surfaces of a simple metal. The first application was to an adatom (pseudo potential plus valence electron) on a jellium model of a free electron type metal. The density functional approximation was used to evaluate the binding energy as a function of adatom-surface distance. Next a layer of surface ions was introduced and the adatom surface binding energy determined as a function of position over the surface, thereby evaluating the energy for surface migration. Finally the influence of one layer steps, or ledges, on an otherwise smooth surface, were explored and the size of the binding energy for adatoms at a ledge was evaluated. (Author)

Descriptors :   *Computations, *Adatoms, *Nuclear binding energy, *Surface chemistry, *Mobility, Approximation(Mathematics), Ions, Layers, Free electrons, Migration, Adhesion, Surface energy, Metals, Electron density

Subject Categories : Physical Chemistry
      Numerical Mathematics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE