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Spatial correlation effects of charged impurities on electron mobility in δ-doped quantum barriers

✍ Scribed by P.M. Koenraad; J.M. Shi; A.F.W. van de Stadt; A. Smets; J.H. Wolter; F.M. Peeters; J.T. Devreese; J.A.A.J. Perenboom

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 138 KB
Volume: 21
Category: Article
ISSN: 0749-6036
DOI: 10.1006/spmi.1996.0188

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✦ Synopsis

The quantum mobility has been measured in δ-doped GaAs/Al x Ga 1-x As/GaAs structures in which one is able to vary the population of DX states. The experiments show that spatial correlations in the charge distribution enhance the quantum mobility. We are able to correctly account for these correlation effects in the mobility calculations.

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✍ J.M. Shi; F.M. Peeters; J.T. Devreese; P.M. Koenraad; A.F.W. van de Stadt; J.H. 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 66 KB

A theoretical study is presented of the electronic structure of a δ-doped quantum barrier. Three models are used to investigate the influence of DX centers on this electronic structure in the absence and in the presence of spatial correlations of charged impurities. The importance of introducing a q