Ab initio quasiparticle energies in 2H, 4H, and 6H SiC

R.T.M. Ummels, P.A. Bobbert, W. van Haeringen

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Ab initio quasiparticle energies are calculated for the 2H, 4H, and 6H polytypes of SiC within the GW approximation for the self-energy. The starting point is a calculation within the pseudopotential local-density approximation framework. The calculated fundamental gaps of 3.15, 3.35, and 3.24 eV for 2H, 4H, and 6H SiC, respectively, show very good agreement with experimental data. The energy dependence of the screened interaction is modeled by a plasmon pole model from which the plasmon band structures are obtained
Original languageEnglish
Pages (from-to)6795-6799
Number of pages5
JournalPhysical Review B
Issue number11
Publication statusPublished - 1998


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