We report the results for the ground state energies and wave functions obtained by projecting spatially unrestricted Hartree-Fock states to eigenstates of the total spin and the angular momentum for harmonic quantum dots with N≤12 interacting electrons including a magnetic field. The ground states with the correct spatial and spin symmetries have lower energies than those obtained by the unrestricted method. The chemical potential as a function of a perpendicular magnetic field is obtained. Signature of an intrinsic spin blockade effect is found
De Giovannini U., Cavaliere F., Cenni R., Sassetti M., Kramer B. (2008). Spin-projected unrestricted Hartree-Fock ground states for harmonic quantum dots. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 77(3) [10.1103/PhysRevB.77.035325].
Spin-projected unrestricted Hartree-Fock ground states for harmonic quantum dots
De Giovannini U.
;Sassetti M.;
2008-01-22
Abstract
We report the results for the ground state energies and wave functions obtained by projecting spatially unrestricted Hartree-Fock states to eigenstates of the total spin and the angular momentum for harmonic quantum dots with N≤12 interacting electrons including a magnetic field. The ground states with the correct spatial and spin symmetries have lower energies than those obtained by the unrestricted method. The chemical potential as a function of a perpendicular magnetic field is obtained. Signature of an intrinsic spin blockade effect is found
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