Low-temperature illumination and annealing of ultrahigh quality quantum wells

@article{Samani2014LowtemperatureIA,
  title={Low-temperature illumination and annealing of ultrahigh quality quantum wells},
  author={M. Samani and A. V. Rossokhaty and Ebrahim Sajadi and Silvia Luscher and J. Folk and J. Watson and G. Gardner and M. Manfra},
  journal={Physical Review B},
  year={2014},
  volume={90},
  pages={121405}
}
  • M. Samani, A. V. Rossokhaty, +5 authors M. Manfra
  • Published 2014
  • Physics
  • Physical Review B
  • The effects of low-temperature illumination and annealing on fractional quantum Hall (FQH) characteristics of a GaAs/AlGaAs quantum well are investigated. Illumination alone, below 1 K, decreases the density of the two-dimensional electron gas (2DEG) electrons by more than an order of magnitude and resets the sample to a repeatable initial state. Subsequent thermal annealing at a few Kelvin restores the original density and dramatically improves FQH characteristics. A reliable illumination and… CONTINUE READING

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