Diamagnetic Susceptibility of a Hemi-Cylindrical Quantum Dot in the Presence of an Off-Center Donor Atom

Q4 Physics and Astronomy

Defect and Diffusion Forum Pub Date : 2023-08-22 DOI:10.4028/p-KTnG7c

O. Mommadi, S. Chouef, R. Boussetta, M. Hbibi, L. Belamkadem, M. Chnafi, M. El Hadi, A. El Moussaouy, C. M. Duque, C. A. Duque, A. K. El-Miad, F. Falyouni

引用次数: 0

Abstract

In this paper, we have studied the electron-donor atom diamagnetic susceptibility confined in a hemi-cylindrical quantum dot (QD). It is analyzed specifically how the impurity location affects diamagnetic susceptibility. The 3D Schrödinger equation in hemi-cylindrical QD was solved using the finite difference method within the effective mass approximation. This is accomplished by performing our system's Hamiltonian in hemi-cylindrical geometry. We have demonstrated that the hemicylindrical size and impurity position have a significant impact on the diamagnetic susceptibility. When the impurity is localized in the center of the nanostructure for the hemi-cylindrical QD, the diamagnetic susceptibility reaches its greatest value.

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偏心给体原子存在下半圆柱形量子点的抗磁化率

本文研究了半圆柱形量子点（QD）中电子供体原子的抗磁性。具体分析了杂质位置对抗磁化率的影响。在有效质量近似下，用有限差分法求解了半圆柱形量子点中的三维薛定谔方程。这是通过在半圆柱几何中执行我们系统的哈密顿量来实现的。我们已经证明，半圆柱形尺寸和杂质位置对抗磁化率有显著影响。当杂质位于半圆柱形QD的纳米结构的中心时，抗磁化率达到其最大值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Defect and Diffusion Forum Physics and Astronomy-Radiation

CiteScore

1.20

自引率

0.00%

发文量

127

期刊介绍： Defect and Diffusion Forum (formerly Part A of ''''Diffusion and Defect Data'''') is designed for publication of up-to-date scientific research and applied aspects in the area of formation and dissemination of defects in solid materials, including the phenomena of diffusion. In addition to the traditional topic of mass diffusion, the journal is open to papers from the area of heat transfer in solids, liquids and gases, materials and substances. All papers are peer-reviewed and edited. Members of Editorial Boards and Associate Editors are invited to submit papers for publication in “Defect and Diffusion Forum” . Authors retain the right to publish an extended and significantly updated version in another periodical.