Dependence on plasma density of the conductivity of an electron-hole plasma in germanium at 2 K

High densities of electron-hole plasma have been optically injected into Ge at T ∼ 2K, and the plasma density inferred from measurements of the plasma absorption at 3.39μ. The behavior of the conductivity with increasing density and at different electric fields can be understood from a model of a plasma condensation into high density drops, with the plasma density in the drops ? 6 × 10¹⁶ c⁻³.