Self-sustained oscillations caused by magnetic field in a weakly-coupled GaAs/AlAs superlattice
Data(s) |
2000
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Resumo |
We have investigated the influence of transverse magnetic field B up to 14 T at 1.6 K on the tunneling processes of electric field domains in doped weakly coupled GaAs/AlAs superlattices. Three regimes, i.e, stable field domains, current self-sustained oscillations and averaged field distribution are successively observed with increasing B. The mechanisms of switching-over among these regimes are due to B-induced modification of the dependence of the effective electron drift velocity on electric field. The simulated calculation gives a good agreement with the observed experimental results. (C) 2000 Published by Elsevier Science B.V. All rights reserved. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Sun BQ; Wang JN; Jiang DS; Wu JQ; Wang YQ; Ge WK .Self-sustained oscillations caused by magnetic field in a weakly-coupled GaAs/AlAs superlattice ,PHYSICA B,2000,279(1-3):220-223 |
Palavras-Chave | #半导体物理 #transverse magnetic field #field domains #self-sustained oscillations #SEMICONDUCTORS |
Tipo |
期刊论文 |