Abstract

The conductance of a thin single crystal slab of germanium has been modulated by a small electric field of variable frequency capacitively applied to the large face. The resulting dispersion which is related to the generation and recombination of minority carriers at the surface has been studied as a function of surface potential by using different ambient gases. The results show some agreement with the single energy level model analysed by Garrett and indicate in addition that the etched surfaces investigated were non-uniform.

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