Stark Splitting of the Energy Spectrum in a Two-Electron Quantum Dot

A two-electron quantum dot model assuming the existence of the image charge is formulated in the present paper. Based on this model, the effective electron confinement potential is calculated by the self-consistent method. It is established that the electron confinement potential in the quantum dot has both symmetric and antisymmetric parts. An analysis of this potential demonstrates that the tunnel electron transition in the quantum dot can occur only in the direction perpendicular to the film plane. __________ Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 9–20, May, 2005.