Thermal etching of GaAs (1 1 3) surfaces

We discuss scanning electron micrographs and atomic force microscope images of thermally etched GaAs(1 1 3) surfaces. The GaAs(1 1 3)A and GaAs(1 1 3)B surfaces are compared. The polarity of the surface leads to a different morphology for the two surfaces after thermal etching. It is found that the...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 1998-04, Vol.9 (2), p.115
Main Authors: Scholz, S M, Setzer, C, Jacobi, K, Schabert, F, Rabe, J P
Format: Article
Language:English
Subjects:
Microscopes
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Summary:We discuss scanning electron micrographs and atomic force microscope images of thermally etched GaAs(1 1 3) surfaces. The GaAs(1 1 3)A and GaAs(1 1 3)B surfaces are compared. The polarity of the surface leads to a different morphology for the two surfaces after thermal etching. It is found that the Ga-enriched droplets, which form under As-deficient conditions at higher temperatures, are sitting on characteristic pedestals, which are different for the two faces. The facets occurring after this thermal etching process are identified. They represent thermally favourable surfaces under the arsenic-deficient conditions of the thermal etching process. © 1998 Chapman & Hall[PUBLICATION ABSTRACT]
ISSN:0957-4522
1573-482X
DOI:10.1023/A:1008857321897