Dynamical screening and quasiparticle spectral functions for nonmetals
- 15 March 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 49 (11) , 7357-7362
- https://doi.org/10.1103/physrevb.49.7357
Abstract
Quasiparticle bandstructure calculations for semiconductors treat the exchange-correlation self-energy operator within the GW approximation. In this paper, a detailed study of the energy dependence of the self-energy due to dynamical screening is presented. Spectral functions for near-band-gap excitations in silicon and diamond are calculated and the quasiparticle peak and satellite structures are discussed.Keywords
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