文章基本信息
- 标题：Diamagnetic Susceptibility of a Confined Donor in a Quantum Dot with Different Confinements
- 其他标题：Diamagnetic Susceptibility of a Confined Donor in a Quantum Dot with Different Confinements
- 本地全文：下载
- 作者：A. J. Peter ; J. Ebenezar
- 期刊名称：Journal of Scientific Research
- 印刷版ISSN：2070-0237
- 电子版ISSN：2070-0245
- 出版年度：2009
- 卷号：1
- 期号：2
- 页码：200-208
- DOI：10.3329/jsr.v1i2.1184
- 语种：English
- 出版社：Rajshahi University
- 摘要：The binding energies of shallow hydrogenic impurity in a GaAs/GaAlAs quantum dot with spherical confinement, harmonic oscillator-like and rectangular well-like potentials are calculated as a function of dot radius using a variational procedure within the effective mass approximation. The calculations of the binding energy of the donor impurity as a function of the system geometry have been investigated. A comparison of the eigenstates of a hydrogenic impurity in all the confinements of dots is discussed in detail.  We have computed and compared the susceptibility for a hydrogenic donor in a spherical confinement, harmonic oscillator-like and rectangular well-like potentials for a finite QD and observe a strong influence of the shape of confining potential and geometry of the dot on the susceptibility. Keywords: Quantum dot; Quantum well wire; Quantum well; Diamagnetic susceptibility; Donor impurity. © 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v1i2.1184  Â
- 关键词：Physics;Quantum dot; Quantum well wire; Quantum well; Diamagnetic susceptibility; Donor impurity
