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Applied Physics Letters
Paper

Tunneling microscopy and spectroscopy of molecular beam epitaxy grown GaAs-AlGaAs interfaces

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Abstract

We report the first observation of GaAs/AlGaAs compound multilayers and interfaces at atomic scale resolution. Using a scanning tunneling microscope, the atomic registry in the epitaxial layers and their interfaces was observed. The semiconductor band gaps and valence-band offsets relative to the Fermi level are obtained via local spectroscopy in the GaAs and AlGaAs multilayers.

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Applied Physics Letters

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