Spin-projected unrestricted Hartree-Fock ground states for harmonic quantum dots

被引：27
|
作者：
De Giovannini, U. [1 ]
Cavaliere, F. [1 ]
Cenni, R. [2 ]
Sassetti, M. [1 ]
Kramer, B. [3 ,4 ]
机构：
[1] Univ Genoa, Dipartimento Fis, Ist Nazl Fis Nucl, CNR,LAMIA, I-16146 Genoa, Italy
[2] Univ Genoa, Dipartimento Fis, Ist Nazl Fis Nucl, Sezione Genova, I-16146 Genoa, Italy
[3] Univ Hamburg, Inst Theoret Phys 1, D-20355 Hamburg, Germany
[4] Jacobs Univ Bremen, D-28759 Bremen, Germany
来源：
PHYSICAL REVIEW B | 2008年 / 77卷 / 03期
关键词：
D O I：
10.1103/PhysRevB.77.035325
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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页数：10
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