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VOLUME 41 (1985) | ISSUE 2 | PAGE 58
Stochastic self-excited oscillations in low-mobility semiconductors
The time evolution of the fluctuations in the electric field and in the free-carrier density in a low-mobility semiconductor is analyzed. If the voltage across the sample is sufficiently high and/or the sample is illuminated by sufficiently intense light of the appropriate frequency, a stationary state of the system will be unstable, and stochastic self-excited oscillations of the electric field and of the free-carrier density will set in.