1980
DOI: 10.1002/pssb.2221020210
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Electron Density Distribution at Point Defects. Application of the Quadratic Response Theory

Abstract: The static quadratic response theory of the electron gas including exchange and correlation corrections is applied to point defects. Induced electron densities, potentials, and screening lengths are calculated for a point charge and for a vacancy in the jellium. The results are compared with existing self-consistent calculations for these systems as a test for the reliability of the quadratic screening. In general a large part of the deficiency of the linear screening is removed already by the quadratic terms.… Show more

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