Effect of hydrostatic pressure on diamagnetic susceptibility of hydrogenic donor impurity in core/shell/shell spherical quantum dot with Kratzer confining potential

•Analytical expressions for the diamagnetic susceptibility of the electron are obtained.•The dependence of the diamagnetic susceptibility on the pressure is considered.•The dependence of the diamagnetic susceptibility on r0r0 and U0U0 parameters is obtained.•The change of diamagnetic susceptibility value due to quantum emission is observed.

AbstactThe effect of the hydrostatic pressure on diamagnetic susceptibility of on-center hydrogenic donor impurity in Ga1−x1Alx1As/GaAs/Ga1−x2Alx2AsGa1−x1Alx1As/GaAs/Ga1−x2Alx2As core/shell/shell structure with Kratzer confining potential has been theoretically investigated in the framework of the effective mass approximation. The diamagnetic susceptibility has been calculated as a function of the characteristic parameters of Kratzer confining potential. With the increase of the hydrostatic pressure, the diamagnetic susceptibility increases. The same dependence from the depth of the Kratzer potential was obtained. However, the value of the diamagnetic susceptibility became saturated. The results show that with the potential minimum point increase, the diamagnetic susceptibility increases until some critical value, after which it decreases.

Graphical abstractDependencies of diamagnetic susceptibility χdiaχdia on parameter r0r0 for different values of hydrostatic pressure for 1s state.Dependence of diamagnetic susceptibility χdiaχdia on hydrostatic pressure PP for different values of r0r0 for 1s state.Figure optionsDownload full-size imageDownload as PowerPoint slide