Geometry of the core-shell nanowire of length L, radius R, core radius Rc , and shell thickness t in the () coordinate system. Also shown is the location of a dislocation with Burgers vector .
Plot of (a) , (b) , and (c) for an InAs-Al0.1In0.9As core-shell nanowire with nm and t = 10 nm. Solid lines are for the wurtzite (WZ) structure, while dashed lines are for the zincblende (ZB) structure. Red lines denote the core, while blue lines denote the shell.
Plot of the critical Al x As shell thickness as a function of InAs core diameter for different alloy parameters, x. Also shown are data points from nanowires grown previously denoted A, B, and C.
SAD pattern of InAs-Al x As core-shell nanowires along the zone axis for (a) 0.53, 3.6% mismatch, (b) 0.36, 2.5% mismatch, and (c) 0.20, 1.3% mismatch. A, B, C from Figure 3 correspond to (a), (b), and (c) in this figure.
SAD pattern of InAs-Al x P core-shell nanowires along the zone axis for (a) 0.53, 7.1% mismatch, (b) 0.36, 5.8% mismatch.
Plot of the critical Al x As shell thickness as a function of InAs core diameter for different alloy parameters, x for zincblende materials.
Non-zero components of the stiffness tensor cij . Shown are the tabulated zincblende23 and calculated wurtzite values. Components of the stiffness tensor for ternary alloys Al x P and Al x As were computed using Vegard's law.23
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