Chaotic front dynamics in semiconductor superlattices

2001/12/12 by Andreas Amann, A. Amann, J. Schlesner +3
Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Theoretical and Computational Physics #cond-mat

paper · pdf · doi:10.1103/physrevb.65.193313

published as Phys. Rev. B 65, 193313 (2002) · 4 pages, 4 figures

arxiv created 2001/12/12 · openalex publication_date 2002/05/10 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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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