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Chaotic front dynamics in semiconductor superlattices

A. Amann·J. Schlesner·A. Wacker·E. Schöll
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Abstract

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.

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A. Amann, J. Schlesner, A. Wacker, E. Schöll. 2001-12-12. Chaotic front dynamics in semiconductor superlattices. https://doi.org/10.1103/physrevb.65.193313

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