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

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. (c) 2007 American Institute of Physics.