LIGHT-INDUCED SPACE-CHARGE WAVES IN GAAS/ALAS SUPERLATTICES

被引：1

作者：

MINOT, C ^{[1
]}

LEPERSON, H ^{[1
]}

PALMIER, JF ^{[1
]}

MOLLOT, F ^{[1
]}

机构：

[1] CNRS,L2M,F-92225 BAGNEUX,FRANCE

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1992年 / 12卷 / 04期

关键词：

D O I：

10.1016/0749-6036(92)90318-Y

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report time-resolved photocurrent experiments in undoped GaAs/AlAs superlattices. Owing to a numerical simulation, the photoresponses are analysed in terms of the formation and propagation of space charge waves, based on the negative differential velocity of the electrons. Either transient or quasi-continuous space charge waves are evidenced, depending on the photocreated carrier density. The results are shown to be compatible with a miniband conduction mechanism. © 1992.

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页码：543 / 548

页数：6

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