Dj. Barnes et al., DIRECT OBSERVATION OF THE SEMIMETAL TO SEMICONDUCTOR TRANSITION IN CROSSED BAND-GAP SUPERLATTICES AT MAGNETIC-FIELDS OF UP TO 150-T, Solid-state electronics, 37(4-6), 1994, pp. 1027-1030
Ultra-high magnetic field (> 150 T) cyclotron resonance has been perfo
rmed on type II InAs/Ga(In)Sb superlattices. The electron density data
reveals a dramatic depopulation at a critical magnetic field correspo
nding to the uncrossing of the lowest electron and hole Landau levels.
The magnitude of this critical field decreases with decreasing superl
attice period.