Spin-projected unrestricted Hartree-Fock ground states for harmonic quantum dots
- Authors: De Giovannini U.; Cavaliere F.; Cenni R.; Sassetti M.; Kramer B.
- Publication year: 2008
- Type: Articolo in rivista
- OA Link: http://hdl.handle.net/10447/543108
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