A General Expression for the Coulomb Interaction in the Presence of a Surface
S Apell, David R. Penn
A general expression is presented for the Coulomb interaction between two test charges in the presence of an interface. The cases of planar and spherical geometry are considered. The potential is given for the two test particles outside, inside, or on either side of the interface, and appropriate limits are investigated.
Physical Review B (Condensed Matter and Materials Physics)