Abstract
Using a variational procedure within the effective-mass approximation we calculate the binding and normalized binding energies of a hydrogenic donor impurity in a GaAs/AlAs spherical quantum dot, under the action of homogeneous magnetic field B ⇒ ( 0 , 0 , B ) directed along the z-axis. A proper choice of the dot radius and the magnetic field can largely change the normalized binding energy NE bB of a central hydrogenic impurity in the spherical quantum dot, which may be used to feel the small change in the dot radius.
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