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- W2002616002 abstract "We present a theoretical study of the optical properties of excitons in symmetric and asymmetric bulk and near-surface double quantum wells (DQWs) under the action of an external magnetic field oriented along the growth direction. The coupling of magnetoexcitons with light in the semiconductor heterostructure is described with Stahl’s real-space density-matrix approach. After solving the system of equations for the coherent wave amplitude and the electromagnetic fields, we calculate optical spectra (reflectivity and absorption) for specific GaAs/AlGaAs DQWs. Our results for the absorption of bulk symmetric DQWs are compared with those obtained by Vera and Barticevic [F. Vera and Z. Barticevic, J. Appl. Phys. 83, 7720 (1998)]. The effect of the surface-magnetoexciton interaction upon the reflectivity and absorption for near-surface DQWs is analyzed. It is established that such an interaction alters the symmetry or asymmetry of the DQWs, and therefore, the resonance structure of their optical spectra is noticeably modified as the thickness of the cap layer is reduced." @default.
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- W2002616002 date "2007-09-15" @default.
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- W2002616002 title "Magnetoexcitons in near-surface symmetric and asymmetric double quantum wells: Optical properties" @default.
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- W2002616002 doi "https://doi.org/10.1063/1.2783776" @default.
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