Diamagnetic spike modification of a two-dimensional electron gas confined within a parabolic quantum well

The diamagnetic susceptibility of a two-dimensional electron gas becomes greatly altered when the electrons are located in a parabolic quantum well. The shift of cyclotron frequency and removal of Landau-level degeneracy within the well by the quadratic potential modifies the density of states, and consequently alters the magnetic-field dependence of the free energy and the magnetization. In the zero-temperature limit, predicted changes in diamagnetic spikes for appropriate parabolic-quantum-well parameters directly reveal the effects of the quadratic potential.