Well-width dependence of ${\mathit{D}}^{\mathrm{-}}$ cyclotron resonance in quantum wells

Negative-donor (${\mathit{D}}^{\mathrm{-}}$ center) cyclotron resonance is studied in GaAs quantum wells of different widths to obtain information about the well-width dependence of the ${\mathit{D}}^{\mathrm{-}}$ ground-state binding energy and optical transition energies in the range of 58–373 Å. The experimental magneto-optical transition energy is shown to increase with decreasing well width, in good agreement with variational quantum Monte Carlo results.