CYCLOTRON-RESONANCE-INDUCED NEGATIVE PHOTOCONDUCTIVITY IN GAAS/ALXGA1-XAS QUANTUM-WELLS

被引：0

作者：

CHEN, YF

SHEN, JL

CHANG, YH

机构：

[1] Physics Department, National Taiwan University, Taipei

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 88卷 / 04期

关键词：

D O I：

10.1016/0038-1098(93)90520-W

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report a novel negative magnetophotoconductivity response occurring at cyclotron resonance in GaAs/Al0.3Ga0.7As quantum wells under the illumination of the photon energy larger than the energy gap of the barrier. The experiment can be explained by the creation of the asymmetry of the confined potential due to the charge transfer of the photoexcited electrons and holes. The prediction of the model that the negative photoconductivity disappears for the sample under the illumination of the photon energy between the energy gaps of the barrier and the well is further confirmed by the experiment.

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页码：337 / 340

页数：4

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