Abstract

Extremely regular periodic peaks in device current, capacitance, and intersubband photocurrent are observed in a multiple-quantum-well structure in which the period is a coupled double well. Hysteresis is displayed in all the measurements with respect to the scan direction of the applied voltage. A phenomenological model is used to explain the observed results. The complexity of charge transport in such a system where high- and low-field domains are formed is also discussed.

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