Influence of hydrostatic pressure on electronic states and optical properties of spherical quantum dots

摘要

In this paper the electronic states and direct interband light absorption in the spherical quantum dot with modified Poschl-Teller potential made of GaAs under influence of hydrostatic pressure and temperature effects are studied. For the regime of strong size quantization analytical expressions for the particle energy spectrum and dependencies of effective threshold frequencies of absorption on the geometrical sizes of quantum dot are obtained. The selection rules corresponding to different transitions between quantum levels are found. It has been demonstrated that the reduction of the half-width potential well leads to the "blue" shift of threshold frequencies, and the reduction of the depth of potential well leads to the "red" shift of threshold frequency. Selection rules for quantum transitions have been obtained. It has been demonstrated that the reduction of the half-width potential well leads to the "blue" shift of threshold frequencies, and the reduction of the depth of potential well leads to the "red" shift of threshold frequency. Selection rules for quantum transitions have been obtained.