Instability of the drift waves at two-component solid-state plasma

Summary form only given. The instabilities of longitudinal waves in the infinite semiconductor electron-hole plasma have been considered. It was assumed that the thermal velocity of electrons slightly exceeds the thermal velocity of holes. The investigated structure has been placed in an external electric field which results in the relative motion of electrons and holes. The consideration has been realized by a hydrodynamical approximation. The electromagnetic processes at such a structure have been described by Maxwell´s and material equations. It was shown that the effective interaction of various drift waves is possible in the area of negative phase velocities. A correlation between the drift velocities of electrons and holes and thermal velocities of carriers have been obtained. The numerical calculation shows that the resonance area of frequencies exists. The width of the area grows when the ratio of electron and hole Langmuir frequencies tends to unity. The instabilities have aperiodic character when the Langmuir frequencies and thermal velocities of carriers are equal. A nonresonance instability (resistive instability) of hole waves appear when the dissipation processes are taken into consideration. Such an instability is possible when the phase velocity is both positive and negative. In this case the electron drift waves are damped.