Abstract
Miniband transport in semiconductor superlattices in high electric and magnetic fields aligned parallel to the symmetry axis is studied within a quantum-kinetic approach that accounts for intra-collisional field effects of both fields and the heating of the lateral electron motion. Scattering on acoustical and optical phonons as well as impurities is taken into account. Dominating elastic scattering under the condition of strong lifetime broadening and weak screening leads to monotonous current-voltage characteristics. Stark-cyclotron-phonon resonances are strongly enhanced by a magnetic field and are predicted to occur in systems, where the elastic scattering is weak compared with scattering on polar-optical phonons.
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