The position of the reference plane z0 as well as the dipole and quadrupolar contributions to the long-range atom-surface interaction are evaluated within a simple model. The model treats the substrate as a bulk material and a selvedge, each of which has constant electronic density. The required polarizabilities of the atom are treated as one-term Padé approximants. It is then straightforward to calculate the electronic susceptibility and evaluate expressions for C3, C′5, and z0 that have been recently derived.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry