Analysis of the temperature-induced transition to current self-oscillations in doped GaAs/AlAs superlattices

نویسندگان

  • Chang-Yi Li
  • Bao-Quan Sun
  • De-Sheng Jiang
چکیده

We observed the decrease of the hysteresis effect and the transition from the stable to the dynamic domain regime in doped superlattices with increasing temperature. The current–voltage characteristics and the behaviours of the domain boundary are dominated by the temperature-dependent lineshape of the electric field dependence of the drift velocity (V (F )). As the peak–valley ratio in the V (F) curve decreases with increasing temperature, the hysteresis will diminish and temporal current self-oscillations will occur. The simulated calculation, which takes the difference in V (F) curves into consideration, gives a good agreement with the experimental results.

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تاریخ انتشار 2001