Investigation of effective potential of electron-ion interaction in semibounded metal
The effective potential of the electron--ion interaction in a semibounded metal (potassium) is calculated numerically, taking into account the local field correction in the Hubbard form, using the local pseudopotential of Krasko--Gursky. The influence of the metal/vacuum interface and the approximation for the local field correction on the behavior of the effective potential of the electron--ion interaction is investigated.