Infrared probing of a large electron-hole drop in germanium
Pokrovskii Ya.E., Svistunova K.I.
It was observed that at 2°K, when inhomogeneously deformed germanium disks are exposed to pulsed photoexcitation, the absorption of radiation with λ = 3.39 μ by the disks corresponds to a single electron-hole drop of ~ 1 mm in size, and the radiation scattering typical of a cloud of minute droplets vanishes.