ADDITION ENERGIES IN SEMICONDUCTOR QUANTUM DOTS - ROLE OF ELECTRON-ELECTRON INTERACTION

We show that the addition spectra of semiconductor quantum dots in the presence of magnetic field can be studied through a theoretical schem e that allows an accurate and practical treatment of the single-partic le states and electron-electron interaction up to large numbers of ele ctrons. The calculated addition spectra exhibit the typical structures of Hund-like shell filling, and account for recent experimental findi ngs. A full three-dimensional description of Coulomb interaction is fo und to be essential for predicting the conductance characteristics of few-electron semiconductor structures. (C) 1998 American Institute of Physics.