The effect of the cross-gap alignment on magneto-transport in short periodInAs/GaSb superlattices

We investigate de and pulsed magneto-transport in InAs/GaSb superlattices, at low temperatures. High electric and magnetic fields up to 14.5T are appl ied parallel to the superlattice growth direction. In the low electric and magnetic field regimes eve observe a temperature dependent threshold to con duction. At higher biases the superlattice exhibits a large magneto-resista nce and in the quantum limit we observe conduction peaks, which satisfy the Stark-cyclotron-resonance condition. We have performed eight band ii p cal culations, which show that the miniband width in this system is strongly k dependent. (C) 2001 Elsevier Science B.V. All rights reserved.