Nonlinear current–voltage characteristics and recombination current instability in p‐Ge(Au)

Abstract

Results of an experimental study of short and long p-Ge(Au) samples are presented and compared qualitatively with data furnished by the one-dimensional theoretical model describing the evolution of domain instability in a two-parametric space "voltage V -emission coefficient β ". According to the theory, single, double-and multi-subdomain states and order -disorder -order transitions via intermittency have been observed in the system with increasing voltage. Three operation regimes of the system are found, depending on the region of the parametric space: ohmic, quenched (pulsing) and transit-time. In short samples a second portion with S-switching is revealed in the current -voltage characteristic.