High-field magneto-spectroscopy on p-type GaAs/GaAlAs heterojunctions

Abstract Experimental multi-line spectra of submillimeter-laser magneto-spectroscopy on p-type GaAs/GaAlAs heterojunctions in magnetic fields up to 30 T are presented and discussed in context with recent theoretical results. For magnetic fields B > 20 T, transitions are observed, which are not predicted by the Landau-level calculations.