Electronic structure of ellipsoidally deformed quantum dots

Using a three-dimensional local spin-density functional method, we investig ate the electronic structure of quasi two-dimensional ellipsoidal quantum d ots with elliptical deformation. Changes in the electron addition energy sp ectra and spin polarization are investigated as a function of the number of electrons and the elliptical deformation on the lateral direction confinem ent potential, and compared with those of a circular dot which shows a shel l structure. Especially we find that, due to the electron-electron interact ion, the anisotropy of an elliptical dot is higher than that of a bare pote ntial by similar to 1.2 for experimentally realistic potentials.