Diamagnetic susceptibility of pyramidal core/shell/shell quantum dots under Konwent-like confinement and electric field

IF 2.8 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2026-03-01 Epub Date: 2026-01-30 DOI:10.1016/j.ssc.2026.116336

O. Ben Hammou , M. Jaafar , J. El-Hamouchi , A. Fakkahi , A. Ed-Dahmouny , H. Azmi , R. Arraoui , K. El-Bakkari , S. El Otmani , R. Touti , H. El Ghazi , A. Sali

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引用次数: 0

Abstract

This study examines the diamagnetic susceptibility of an on-center hydrogenic donor impurity in pyramidal core/shell/shell quantum dots (CSSQDs) under a Konwent-like confining potential and an external electric field. The analysis focuses on the dependence of susceptibility on the system's geometrical dimensions, confinement potential parameters, and the applied electric field strength. Within the effective mass approximation, the Schrödinger equation is numerically solved using the finite element method (FEM), ensuring high accuracy and computational flexibility. The results reveal that the diamagnetic susceptibility is highly sensitive to the confinement potential, the applied electric field, and the structural dimensions of the quantum dot (QD). In particular, it decreases with increasing electric field strength, with the effect being most pronounced under weak confinement and in larger systems.

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类konwent约束和电场作用下锥体核/壳/壳量子点的抗磁化率

本文研究了在类孔氏约束电位和外加电场作用下锥体核/壳/壳量子点（CSSQDs）中中心上氢给体杂质的抗磁化率。重点分析了磁化率与系统几何尺寸、约束势参数和外加电场强度的关系。在有效质量近似范围内，采用有限元法对Schrödinger方程进行数值求解，保证了较高的精度和计算灵活性。结果表明，抗磁化率对约束势、外加电场和量子点的结构尺寸高度敏感。特别是，它随着电场强度的增加而减小，在弱约束和较大的系统中效果最为明显。

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

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.