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Quasiparticle effect on electron confinement in Si/SiO2 quantum-well structures

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3 Author(s)
Seino, K. ; Institut für Festkörpertheorie und -optik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany ; Wagner, J.-M. ; Bechstedt, F.

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Based on ab initio density functional theory the influence of many-body excitation effects on band structures of Si/SiO2 multilayers with nanometer thickness is studied. The quasiparticle band structures are calculated within the GW approximation to the exchange-correlation self-energy. The resulting fundamental energy gaps are discussed and compared with experimental data.

Published in:
Applied Physics Letters  (Volume:90 ,  Issue: 25 )

Date of Publication: Jun 2007

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