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Self-oscillations in semiconductor superlattices

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Abstract

An investigation is made of nonlinear oscillations of the field and current in semiconductor superlattices driven by strong terahertz radiation. Regimes of periodic, quasi-periodic, and stochastic self-oscillations are determined and mechanisms for their formation are discussed. It is shown that the self-oscillation spectra are many-valued functions of the external field amplitude and the static field in them is either absent, weak, or fractionally quantized. Previously predicted states of self-induced superlattice transparency and dynamic electron localization are destroyed as a result of the evolution of dissipative and parametric instabilities and can only be observed in transient processes whose duration decreases with increasing electron concentration.

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Authors and Affiliations

  1. Institute of Physics of Microstructures, Russian Academy of Sciences, Nizhni Novgorod, 603600, Russia

    Yu. A. Romanov & Yu. Yu. Romanova

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  1. Yu. A. Romanov
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  2. Yu. Yu. Romanova
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Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 118, No. 5, 2000, pp. 1193–1206.

Original Russian Text Copyright © 2000 by Romanov, Romanova.

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Romanov, Y.A., Romanova, Y.Y. Self-oscillations in semiconductor superlattices. J. Exp. Theor. Phys. 91, 1033–1045 (2000). https://doi.org/10.1134/1.1334994

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