We investigate dc miniband transport in undoped GaAs/AlxGa1−xAs superlattices. High magnetic fields are applied to the samples in the growth direction at low temperature. A strong suppression of miniband conduction is observed under these conditions. We propose a qualitative semi-classical Drude model that can explain the observed results.
Murphy, H. M., Nogaret, A., Stoddart, S. T., Eaves, L., Main, P. C., Henini, M., Maude, D. K., Mori, N., Portal, J-C., & Hamaguchi, C. (1998). A study of miniband conduction in Wannier-Stark superlattices at high magnetic fields. Physica B: Condensed Matter, 256-258, 544-547. https://doi.org/10.1016/S0921-4526(98)00537-7