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Quadruple-period ordering in MBE GaAsSb alloys

Published online by Cambridge University Press:  01 February 2011

Iskander G. Batyrev ,
Andrew G. Norman ,
Shengbai Zhang  and
Su-Huai Wei
Iskander G. Batyrev
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401, U.S.A.
Andrew G. Norman
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401, U.S.A.
Shengbai Zhang
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401, U.S.A.
Su-Huai Wei
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401, U.S.A.
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Abstract

Experimental and theoretical studies are reported for a quadruple period ordering found in GaAsSb alloy layers grown by molecular beam epitaxy at high growth temperatures. We propose a growth model that accounts for the observed three-dimensional (3D) ordered structure. It is shown that the already-ordered material in the previously grown layer affects the reconstruction of the growth front with respect to the underlying alloy template resulting in the correct stacking of the individual 2D ordered layers into the observed 3D ordered structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 794: Symposium T – Self-Organized Processes in Semiconductor Heteroepitaxy , 2003 , T10.5
Copyright
Copyright © Materials Research Society 2004

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