Beyond the One-Electron Approximation: Density of States for Interacting Electrons

Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry
L HedinS Lundqvist

Abstract

The concept "density of states" can be given many different meanings when we go beyond the one-electron approximation. In this survey we concentrate on the definition tied to excitation processes, where one electron is added or removed from the solid. We discuss the one-particle spectral function for conduction and core electrons in metals, how it can be approximately calculated, and how it can be related to different types of experiments like x-ray photoemission, x-ray emission and absorption, photoemission and optical absorption in the ultraviolet, and the Compton effect. We also discuss the form of the exchange-correlation potential for use in band structure calculations.

Citations

Sep 22, 2018·Physical Chemistry Chemical Physics : PCCP·N L Matsko
Feb 21, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Sahar Sharifzadeh
Jan 1, 2018·New Journal of Physics·Daniel GrussMichael Zwolak
Sep 9, 1996·Physical Review Letters·F AryasetiawanK Karlsson

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