Higher Harmonics of Current Density in a Two-Dimensional Graphene-Based Superlattice under the Effect of External Electric Fields, Allowing for the Ionization of Impurities

摘要

An investigation is performed of the dependence of the amplitudes of the higher harmonics of current density in a two-dimensional graphene-based superlattice on the characteristics of constant and alternating electric fields applied to the system, allowing for the ionization of impurity centers. A considerable predominance of some harmonics over others is revealed for certain relations of the parameters of impurities, and of the applied fields.