HYDROGENIC IMPURITIES IN GAAS GAALAS MULTIQUANTUM WELLS IN TILTED MAGNETIC-FIELDS/

Far-infrared photoconductivity measurements on a GaAs/GaAlAs multi-qua ntum well sample in which the normal to the plane of the sample is tip ped away from the magnetic field direction are reported. In order to e xplain these results, the model developed previously by the authors in volving a matrix diagonalization procedure is expanded and then applie d to the experimental results. Good agreement is obtained for angles o f tilt up to about 30-degrees. It is also shown that the model satisfa ctorily explains results previously obtained by Mueller et al.