The ground state of quantum rings in a magnetic field

被引：0
作者：
Liu, Yi-Min [1 ]
Huang, Gang-Ming
Shi, Ting-Yun
机构：
[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
[2] Shaoguan Univ, Dept Phys, Shaoguan 512005, Guangdong, Peoples R China
[3] Zhongshan Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
[4] Zhongshan Univ, Dept Phys, Guangzhou 510275, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2006年 / 20卷 / 23期
基金：
中国国家自然科学基金;
关键词：
quantum ring; magnetic field; energy; ground state; density function;
D O I：
10.1142/S0217984906011414
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The ground state of semiconductor quantum rings (QRs) in the presence of an external magnetic field B is theoretically analyzed. By numerically diagonalizing the effective-mass Hamiltonian of the QRs, the energy and wavefunction of the ground state are obtained. It is found that the energy oscillates as B increases. The evolution of the angular momentum L-0 and the spin So of the ground state in accord with B is revealed. We depict the geometric configuration of the ground state via density functions. Based on an analysis of the wavefunction, it is shown that each configuration is accessible only to a specific group of states having specific L-0 and S-0.
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收藏
页码：1443 / 1451
页数：9
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