SPIKING IN AN ACTIVATOR-INHIBITOR MODEL FOR ELEMENTS WITH S-SHAPED NEGATIVE DIFFERENTIAL CONDUCTIVITY

被引:39
作者
WACKER, A
SCHOLL, E
机构
[1] Institut für Theoretische Physik, Technische Universität Berlin, Berlin, D-10623
来源
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1994年 / 93卷 / 04期
关键词
D O I
10.1007/BF01314246
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Self-organized spatio-temporal dynamics of electrical transport is described by a simple noncubic activator-inhibitor system derive d for layered semiconductor structures. The model exhibits a novel mode of self-sustained oscillations due to current filaments switching on and off (spiking) which may be periodic or chaotic. Additionally, we obtain complex multifilamentary spatio-temporal patterns. As such phenomena have been observed in various devices exhibiting S-shaped negative differential conductivity, our model is suggested to describe a generic mechanism.
引用
收藏
页码:431 / 436
页数:6
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