Electronic structure of the stable GaAs(2 5 1 1) surface
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Published:2004
Issue:10
Volume:53
Page:3515
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ISSN:1000-3290
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Container-title:Acta Physica Sinica
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language:
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Short-container-title:Acta Phys. Sin.
Author:
Jia Yu ,Yang Shi-E ,Ma Bing-Xian ,Li Xin-Jian ,Hu Xing ,
Abstract
We have studied the optical properties of the interface of Al and GaAs surface q uant um well by insitu photoreflectance (PR) spectroscopy in a molecular beam e pitax y (MBE) system. The intermixing of Al and GaAs surface quantum wells forms an AlxGa1-xAs barrier layer on GaAs, which would shift the inte r_band transition peaks of the GaAs quantum well. Based on the calculation using effective mass approximate method, we fi nd that the intermixing length is 0.5nm, which is an important parameter in sem iconductor technology.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy