Donor Impurity-Related Optical Absorption in GaAs Elliptic-Shaped Quantum Dots

Figure 4

(a, b) Energy of the first ten confined-electron states in an elliptical GaAs quantum dot as a function of the applied electric field along the -direction (a, c) and -direction (b, d). The results are for and without impurity (a, b) and with on-center impurity (c, d). A constant dot-height of has been considered.

(a)

(b)

(c)

(d)