Abstract

The relationship between type S and type N (Gunn effect) bulk negative differential conductivity (BNDC) is shown in n-InSb at 77 K and atmospheric pressure. The results of conduction measurements and of radiative recombination measurements, both in time and space, shown that an S-BNDC is created in the wake of a propagating high-field domain and that the large currents associated with the S-BNDC are caused by strong impact ionization in the domain.

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