Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-11-30
Journal of Chemical Physics 125, 034707 (2006)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 pages, 12 figures
Scientific paper
10.1063/1.2219447
We present unrestricted Hartree Fock method coupled with configuration interaction (CI) method (URHF-CI) suitable for the calculation of ground and excited states of large number of electrons localized by complex gate potentials in quasi-two-dimensional quantum dot molecules. The method employs real space finite difference method, incorporating strong magnetic field, for the calculating of single particle states. The Hartree-Fock method is employed for the calculation of direct and exchange interaction contribution to the ground state energy. The effects of correlations are included in energies and directly in the many-particle wavefunctions via configuration interaction (CI) method using a limited set of excitations above the Fermi level. The URHF-CI method and its performance are illustrated on the example of ten electrons confined in a two-dimensional quantum dot molecule.
Abolfath Ramin M.
Hawrylak Pawel
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