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- Title
Effects of Dissipation and Noise on Chaotic Transport in Superlattices.
- Authors
Balanov, A. G.; Greenaway, M. T.; Fromhold, T. M.
- Abstract
We study the effects of dissipation and noise on chaotic electron dynamics, which accompany charge transport in semiconductor superlattices with an applied bias voltage and a tilted magnetic field. We consider the evolution of different chaotic trajectories as decoherence increases, and show that below a critical level of the dissipation rate, dissipative chaos plays an important role in the electron transport. However, by increasing the dissipation rate above the critical level, chaotic dynamics disappear and electrons only demonstrate regular motion. We also investigate how the presence of random fluctuations affects magnetotransport in superlattices and reveal a counter-intuitive non-monotonic dependence of electron drift velocity upon the noise intensity.
- Subjects
SUPERLATTICES; ELECTRON transport; TRANSPORT theory; ELECTRONS; NOISE; ELECTRIC potential; MAGNETIC fields; SEMICONDUCTOR diodes; TUNNEL diode oscillators
- Publication
Acta Physica Polonica: A, 2009, Vol 116, Issue 5, p733
- ISSN
0587-4246
- Publication type
Article
- DOI
10.12693/APhysPolA.116.733