Abstract:The line shape of cyclotron resonance (CR) absorption is investigated for a two-dimensional electron gas (2DEG) in modulation-doped GaInAs/AlInAs narrow SQW structures. CR absorption is measured as functions of far infrared (FIR) frequency, temperature, and carrier concentration. At low temperature and short FIR wavelengths, a well-defined filling-factor-dependent quantum oscillation structure is obtained for samples with high 2DEG concentrations, exhibiting clear maxima and minima and a phase change point at … Show more
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