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
收藏
页码：1427 / 1429
页数：3
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