Few-electron quantum rings in a magnetic field: Ground-state properties

被引：15

作者：

Liu, YM ^{[1
]}

Bao, CG

Shi, TY

机构：

[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

[2] Shaogun Univ, Dept Phys, Guangdong 512005, Peoples R China

[3] Zhongshan Univ, Dept Phys, Guangzhou 510275, Peoples R China

[4] Zhongshan Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.73.113313

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ground-state properties of few-electron quantum rings (QRs) subjected to an external magnetic field B are studied. The evolution of the angular momentum L-0 and the spin S-0 of the ground state in accord with the radius R of the QRs and B has been calculated, the results are summarized and plotted in (L-0,S-0) phase diagrams. These diagrams indicate that L-0 and S-0 may jump when B and/or R vary. The spatial distribution of the electrons has also been investigated. It was found that the ground state of the QRs possesses an equilateral polygon (EP) configuration. Based on an analysis of the wave function, we show that each EP is accessible only to a specific group of states having specific L-0 and S-0.

引用

页数：4

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