Observation and determination of the parameters of large electron-hole drops in germanium by means of microwave conductivity
Manenkov A.A., Milyaev V.A., Mikhailova G.N., Seferov A.S.
We investigated the microwave conductivity of inhomogeneously deformed Ge excited by laser pulses at a wavelength λ = 1.06 μ at helium temperatures. The existence of large electron-hole drops with radius up to 1 mm and density ~2.5Xl016 cm-3, particle binding energy £0s4.6 meV, and lifetime t0ss500 ju.sec was observed.