Figure 9
From: Effects of Geometry on the Electronic Properties of Semiconductor Elliptical Quantum Rings
The lowest ten energy levels of a confined electron in an elliptical quantum ring as functions of the number of hill-like regions [n, see Eq. (5)] in the case of parabolic transversal section. The number of hills has been taken to vary as 0 ≤ n ≤ 12 (a) and from 35 ≤ n ≤ 40. (b) Results are computed for a fixed geometry with Rx1 = 20 nm and Ry1 = 15 nm. In (b) the full dots symbols correspond to the theoretical findings for the ten lowest states in an elliptical quantum ring with parabolic transversal profile and constant height of 4.3 nm. In panel (c) the z = 0 projection of the probability density for the first four confined states (the columns are for ψi, i = 1, 2, 3, and 4) considering different numbers of hills (rows from top to bottom correspond to n = 0, 1, 2, 3, and 4).
