SHALLOW DONORS AND A FLUCTUATING POTENTIAL - EXPERIMENTS IN SEMIINSULATING GAAS

被引：7

作者：

KARPIERZ, K ^{[1
]}

LUSAKOWSKI, J ^{[1
]}

SADOWSKI, ML ^{[1
]}

GRYNBERG, M ^{[1
]}

机构：

[1] POLISH ACAD SCI,UNIPRESS,HIGH PRESSURE RES CTR,WARSAW 42,POLAND

来源：

PHYSICA B | 1993年 / 184卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(93)90389-N

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Far-infrared magneto-optic and conductivity experiments on semi-insulating GaAs at liquid-helium temperatures were performed at magnetic fields up to 9 tesla. During the measurements the samples were persistently illuminated with infrared light which led to a nonzero stationary occupation of both shallow donor and conduction-band states. We show that the results of the experiments cannot be explained without taking into account long-range fluctuations of the electrostatic potential which arise due to the random distribution of charged centres.

引用

页码：403 / 408

页数：6

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