Energetics of single vacancy in alkali metals using the improved screening theory

Abstract
With the Shaw's nonlocal optimized model pseudopotential and the dielectric function due to Vashishta and Singwi (1972) as the basic input, the effective interionic potentials for the alkali metals have been generated. The energetics of a single vacancy have been generated. The energetics of a single vacancy have been calculated using these potentials.