Current self-oscillations and chaos in semiconductor superlattices

被引：2
|
作者：
Grahn, HT [1 ]
机构：
[1] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany
来源：
SUPERLATTICES AND MICROSTRUCTURES | 1999年 / 25卷 / 1-2期
关键词：
oscillator; chaos; resonant tunneling; field domains;
D O I：
10.1006/spmi.1998.0605
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The nonlinear transport properties of weakly coupled superlattices have been investigated by measuring real-time current traces and frequency spectra. Current self-oscillations are observed for the undriven system by simply applying a de voltage. Doped superlattices as well as photoexcited undoped superlattices can exhibit self-oscillations of the current. When the system is driven with an external ac voltage in addition to the de voltage, the superlattices exhibit frequency-locked, quasiperiodic, and chaotic windows as a function of the amplitude of the driving voltage. (C) 1999 Academic Press.
引用
收藏
页码：7 / 11
页数：5
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