Pressure effect on spin–orbit interaction in a spherical quantum antidot

In the present work, the Schrödinger equation is analytically solved for a GaAs/Ga1-xAlxAs spherical quantum antidot with a hydrogenic donor impurity at the center. Then, the effect of pressure on the spin–orbit interaction and binding energy of the quantum antidot is studied within the effective mass approximation. It is observed that (i) the binding energy increases with increasing pressure, (ii) the level splitting increases by increasing pressure and (iii) the splitting decreases with increasing antidot size.