Effect of Rashba interaction and Coulomb correlation on the ground state energy of a GaAs quantum dot with parabolic confinement

The ground state energy of a parabolically confined quantum dot placed in an external magnetic field is studied taking into account the effects of the Rashba spin-orbit interaction (SOI) and electron-electron interaction. With a simple and physically reasonable model potential for electron-electron interaction term, the problem is solved exactly to second order in the Rashba coupling constant. (C) 2012 Elsevier B.V. All rights reserved.