Abstract
The dependence on carrier concentration of the anisotropic spin splitting of the lowest electron subband in asymmetrically doped ${\mathrm{G}\mathrm{a}\mathrm{A}\mathrm{s}/\mathrm{A}\mathrm{l}}_{x}{\mathrm{Ga}}_{1\ensuremath{-}x}\mathrm{As}$ quantum wells is determined. We employ the multiband envelope function approach based on 8\ifmmode\times\else\texttimes\fi{}8 and $14\ifmmode\times\else\texttimes\fi{}14\mathbf{k}\ensuremath{\cdot}\mathbf{p}$ Hamiltonians. Our self-consistent calculations yield results in quantitative agreement with experimental data obtained from inelastic light scattering.
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