The ground-state properties of a two-dimensional quantum-dot are studied. We have used the shifted 1/N expansion method to solve the relative part Hamiltonian of two electrons confined in a quantum in the presence of an applied uniform magnetic field. The spin singlet-triplet transition in the ground state of the QD is shown. We have also displayed the singlet-triplet energy gap, J = ∆ = ET – ES, against the strength of the magnetic field for two electron quantum dot. Based on comparisons, the eigenenergies obtained by the shifted method are in excellent agreement with exact, variational, Hartree-Fock (HF) and Full-Configuration Interaction (FCI) methods.

Title

Turkish Journal of Physics 01/2008; 32:79-84

Publisher

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Publisher Country

Palestine

Indexing

Scopus

Impact Factor

None

Publication Type

Both (Printed and Online)

Volume

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Year

2008

Pages

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