Terahertz time-domain magnetospectroscopy of a high-mobility two-dimensional electron gas.

  title={Terahertz time-domain magnetospectroscopy of a high-mobility two-dimensional electron gas.},
  author={Xiangfeng Wang and David J Hilton and Lei Ren and Daniel M. Mittleman and Junichiro Kono and John L. Reno},
  journal={Optics letters},
  volume={32 13},
We have observed cyclotron resonance in a high-mobility GaAs/AlGaAs two-dimensional electron gas by using the techniques of terahertz time-domain spectroscopy combined with magnetic fields. From this, we calculate the real and imaginary parts of the diagonal elements of the magnetoconductivity tensor, which in turn allows us to extract the concentration, effective mass, and scattering time of the electrons in the sample. We demonstrate the utility of ultrafast terahertz spectroscopy, which can… CONTINUE READING
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