Chaotic front dynamics in semiconductor superlattices

Article

关键词: ELECTRIC-FIELD DOMAINS;    CURRENT OSCILLATION;    SELF-OSCILLATIONS;    MODEL;    SYSTEM;   

DOI  :  10.1103/PhysRevB.65.193313

来源: SCIE

【 摘 要 】

We analyze the dynamical evolution of the current and the charge density in a superlattice for fixed external dc voltage in the regime of self-sustained current oscillations, using a microscopic sequential tunneling model. Fronts of accumulation and depletion layers which are generated at the emitter may collide and annihilate, thereby leading to a variety of different scenarios. We find complex chaotic regimes at high voltages and low contact conductivities.

【 授权许可】

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