An atom or molecule far from a surface experiences an interaction V ~ -C3z-3, where z is the distance to the surface. We compute the coefficient C3 for He, H, and H2 interacting with a graphite surface. The calculation utilizes measured frequency dependent values of the polarizabilities and dielectric function. Comparison is made with C3 values deduced from surface scattering and adsorption experiments.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry