Nonlinear electron-density distribution around point defects in simple metals. II. Applications

Electron distribution around point defects (vacancies, voids, and impurities) in a number of simple metals has been calculated using linear and generalized nonlinear-response theories and compared with that obtained from a self-consistent calculation based on the density-functional formalism of Hohenberg, Kohn, and Sham. Using these electron-density profiles, positron lifetimes, and angular correlation between annihilation photons in vacancies and small voids are calculated. We have also computed the distribution of electric-field gradients due to several impurities in Al. The results are compared with experiment.