Magnetic field dependence of quantum dot ground states

被引：3

作者：

Cavaliere, F. ^{[1
]}

De Giovannini, U. ^{[1
]}

Cenni, R. ^{[2
]}

Sassetti, M. ^{[1
]}

Kramer, B. ^{[3
,4
]}

机构：

[1] Univ Genoa, Dipartimento Fis, CNR, LAMIA INFM, I-16146 Genoa, Italy

[2] Univ Genoa, Dipartimento Fis, Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[3] Univ Hamburg, Inst Theoret Phys, D-920355 Hamburg, Germany

[4] Jacobs Univ Bremen, D-28759 Bremen, Germany

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 05期

关键词：

quantum dots; Hartree Fock; spin; spin blockade;

D O I：

10.1016/j.physe.2007.09.032

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We study the ground states of a planar quantum dot with N = 5,6,7 electrons, in the presence of a perpendicular magnetic field. Using a spatially unrestricted Hartree Fock technique followed by spin and angular momentum symmetry restoration, chemical potentials are calculated and transitions between different ground states are identified. A spin blockade in the 6 -> 7 transition is found. The structure of the quantum dot wave functions is illustrated by their electron densities. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1427 / 1429

页数：3

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