Abstract
Transport of electrons in semiconductor superlattices in high electric and magnetic fields applied parallel to the symmetry axis is studied within a quantum-kinetic approach. Scattering on acoustic and optic phonons as well as impurities is taken into account. Cyclotron-Stark resonances in the current density are much more pronounced in the magnetic field dependence than in the current–voltage characteristic. This theoretical result agrees qualitatively with experiments. Cyclotron-Stark-phonon resonances are strongly enhanced by the magnetic field, but are predicted to be observable only in samples, where the elastic scattering is weak compared to scattering on polar-optical phonons.
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