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Structural anisotropy of InGaAs/GaAs(001) quantum dot chains structures

✍ Scribed by Kladko, V. P. ;Slobodian, M. V. ;Strelchuk, V. V. ;Yefanov, O. M. ;Machulin, V. F. ;Mazur, Yu. I. ;Wang, Zh. M. ;Salamo, G. J.

Book ID
105364357
Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
334 KB
Volume
204
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

We have studied the structural properties of ordered InGaAs/GaAs(001) quantum dot chains multilayer by high‐resolution X‐ray diffraction. Two systems of lateral satellites, one of which being inclined with respect to the sample surface normal, i.e. the growth direction [001], were observed. The measured inclination of 30.0Β° Β± 2.5Β° does not affect the diffraction profile from planar superlattice (SL), i.e. SL peaks are not inclined with respect to the GaAs substrate peak. We identify the splitting of coherent SL satellites for all orders as well as for two perpendicular directions. This splitting most likely indicates that two discrete periods exist in SL structure. (Β© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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