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Nature of the band gap (direct versus indirect) of short‐period (GaAs)n/(AlAs)nsuperlattices grown along the [111] confinement direction

 

作者: R. Cingolani,   L. Tapfer,   K. Ploog,  

 

期刊: Applied Physics Letters  （AIP Available online 1990）
卷期: Volume 56, issue 13  

页码: 1233-1235

 

ISSN:0003-6951

 

年代: 1990

 

DOI:10.1063/1.103333

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We report on spectroscopic experimental evidence of type II band alignment in a (GaAs)6/(AlAs)6superlattice grown by molecular beam epitaxy along the (111) direction. This result is in contrast to recent theoretical calculations predicting that the (GaAs)n/(AlAs)nsuperlattices grown along the (111) direction should be direct for alln’s.

 

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