Crisis in electrical behavior of the TlInSe 2 semiconducting compound

Abstract TlInSe 2 is a ternary semiconductor exhibiting S-type I  U characteristics. In their negative differential resistance (NDR) region voltage oscillations of non-periodic nature appear. The corresponding phase portraits consist of two interacting subat-tractors. Transitions between them become more frequent with increasing current values I . The distribution of the times τ, between successive transitions, and the corresponding phase portraits indicate that in this system a crisis takes place accompanied by an intermittent behavior of the corresponding orbits.