Electric field tunable electron g factor and high asymmetrical Stark effect in InAs_(1_x)N_x quantum dots

摘要

The electronic structure, electron g factor, and Stark effect of InAs_(1-x)N_x quantum dots are studied by using the ten-band k·p model. It is found that the g factor can be tuned to be zero by the shape and size of quantum dots, nitrogen (N) doping, and the electric field. The N doping has two effects on the g factor: the direct effect increases the g factor and the indirect effect decreases it. The Stark effect in quantum ellipsoids is high asymmetrical and the asymmetry factor may be 319.