An efficient method for calculating quasiparticle energies in semiconductors

TitleAn efficient method for calculating quasiparticle energies in semiconductors
Publication TypeJournal Article
Year of Publication1992
Bechstedt, F, Del Sole, R, Cappellini, G, Reining, L
JournalSolid State Communications
Volume84
Issue7
Pagination765 - 770
ISSN0038-1098
Keywordspaper
Abstract

We present a method for the efficient calculation of the electronic structure of semiconductors within the GW approach. It approximately includes dynamical-screening and local-field effects, previously disregarded in simplified GW approaches, without increasing the computational effort. Such effects substantially affect the gap corrections. We find quasiparticle shifts in good agreement with the complete GW calculations or experiment for Si, AlAs, GaAs and ZnSe.

URLhttp://www.sciencedirect.com/science/article/B6TVW-46NY2FF-1JT/2/b7f961232a50e85f1310e58c71296edf
DOI10.1016/0038-1098(92)90476-P
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