Figure 8
From: Effects of Geometry on the Electronic Properties of Semiconductor Elliptical Quantum Rings

The ground state energy level of a confined electron in an elliptical quantum ring as a function of Rx1, for different transversal section profiles (triangular, parabolic, and square). The solid, dashed, and dotted lines correspond to n = 0, n = 2, and n = 4, respectively (see Eq. (5)). Ry1 is fixed to: 15 nm (a) and 25 nm (b). Labels 1 and 2 below the curves correspond to the degree of degeneracy of the level.