Oscillations of the electron mobility in the channel of a GaAs field-effect transistor
Orlov A. O., Savchenko A. K., Chenskii E. V., Il'ichev E. A., Poltoratskii E. A.
Oscillations have been found in plots of the conductivity of the channel in a field-effect transistor versus the voltage on the Schottky gate and versus the substrate voltage at T< 15 K. The gate-channel capacitance does not oscillate as the gate voltage is varied. The oscillations are attributed to fluctuations of the hopping conductivity of a sample of small dimensions.