Generation of transverse direct current in a superlattice under a bichromatic high-frequency electric and constant magnetic fields

Direct-current generation in a semiconductor superlattice exposed to a high-frequency bichromatic electric field applied along its axis and to a constant magnetic field perpendicular to the surface, i.e., superlattice axis, is studied. In the first non-vanishing approximation in terms of the magnetic-field strength, an explicit expression for the current density in the case of the ratio of electric-field frequencies equal to two is derived.