Electronic mechanisms of instability in semiconductor structures

Abstract

Semiconductor crystals are difficult dynamic systems in which emergence of electric not stability is possible (failure of current, spontaneous fluctuations of current or tension, switching and a hysteresis in volt — the ampere characteristic, etc.). This instability meets in many materials, in different temperature areas and at various levels of excitement. In article instability of some branches of volts — the ampere characteristic of semiconductor devices — existence of the negative differential conductivity (NDC) of S-and N-of types is considered. It is shown that NDC are connected with not stability operated by tension or current. The main electronic mechanisms resulting in negative differential conductivity are considered.