Figure 3 | Scientific Reports

Figure 3

From: Electronic structure of vertically coupled quantum dot-ring heterostructures under applied electromagnetic probes. A finite-element approach

Figure 3

The lowest energy levels of an electron confined in a GaAs-Al\(_{0.28}\)Ga\(_{0.72}\)As coupled quantum dot-quantum ring, plotted as functions of radius \(R_1\), for fixed parameters \(R_2=10\) nm, \(F=0\), and \(B=0\). The coordinates of the ring and dot centers are (30, 35) nm and (0, 65) nm, respectively. Full symbols correspond to the case of a spherical quantum dot spectrum (with \(R_2=10\) nm), without quantum ring presence. Calculations are depicted for magnetic quantum number \(|l|\le 3\). Note that for \(l\ne 0\), all the states are doubly degenerated.

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