Crystal Truncation Rod Measurements from Buried Quantum Dots

J. L. Rawle, P. B. Howes and S. G. Alcock
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J. L. Rawle: University of Leicester, Department of Physics and Astronomy, Leicester, LE1 7RH, England
P. B. Howes: University of Leicester, Department of Physics and Astronomy, Leicester, LE1 7RH, England
S. G. Alcock: University of Leicester, Department of Physics and Astronomy, Leicester, LE1 7RH, England

Surface Review and Letters (SRL), 2003, vol. 10, issue 02n03, 525-531

Abstract: We present a method of modelling the X-ray diffraction (XRD) from buried quantum dots (QDs). Both diffuse scattering and crystal truncation rods can be modelled by calculating the scattering atomistically and adding a contribution from the bulk crystal. Because there are a large number of atoms, their positions cannot be fitted independently and Keating energy minimisation is used to ensure that the strain is physically realistic. Calculated scattering is compared with experimental data, and some of the challenges presented by real QDs are considered.

Date: 2003
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DOI: 10.1142/S0218625X03004779

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