Kinetics of instabilities in electron-hold drops under microwave radiation

Under constant optical pumping and microwave excitation a large electron-hole drop (EHD) can heat considerably. The ratio $\frac{T_{\mathrm{carrier}}}{T_{\mathrm{lattice}}}$ depends on the intensity and frequency of the microwave field and on the drop radius. The rate equations governing the growth of a large EHD are solved under these conditions. It is shown that above both optical-pump and microwave-field thresholds the drop heats up to temperatures exceeding the critical temperature. An instability in the system is thus created and spikes in the electrical conductivity are expected.