Measured HRXRD (004) rocking curves. The measured SL period is indicated for each rocking curve in units of angstroms. Satellite orders are labeled, and the curves are offset for visual clarity.
Zero-order peak splitting vs superlattice period for measured (triangles) and simulated (solid line) data.
Structural model for (a) interface 1 (InGaAs on InP) and (b) interface 2 (InP on InGaAs).
Interface layers of a perfect SL structure.
Simulated HRXRD rocking curves of the SL structure illustrated in Fig. 4. The measured SL period is indicated for each rocking curve in units of angstroms.
Measured and simulated (004) HRXRD rocking curves for the rocking curve.
Comparison of peak intensities for samples of period (a) , (b) , (c) , and (d) for each of the models. The solid lines represent the 2-1 (thick line) and 2-2 (thin line) models, and the dashed lines represent the 1-1 (thick dashed) and 1-2 (thin dashed) models. The experimental peak intensities are shown as square data points.
Experimental and simulated rocking curves using the same model and interface layer compositions (, , , and ) for each sample. The curves are shown offset for visual clarity with the experimental curve above the simulated curve for each sample. The measured SL period is indicated for each sample in units of angstroms.
Measured (triangles) and simulated (solid lines) FWHM of the satellite peak for each sample. Simulated lines based on 0, 2, and 4 ML of interface roughness are shown.
Simulation results for the 2-1 model. Note that is fixed at 1.
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