Thermodynamic properties of multilayered spherical quantum dots: Confinement, temperature and magnetic field dependence

IF 3.3 Q2 MULTIDISCIPLINARY SCIENCES

Scientific African Pub Date : 2025-09-27 DOI:10.1016/j.sciaf.2025.e02995

S. Chouef , M. Hbibi , R. Boussetta , A. El Moussaouy , F. Falyouni , O. Mommadi , C.A. Duque

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Abstract

We investigate how temperature variation, confinement conditions, and magnetic field strength influence the thermodynamic behavior of GaAs/Al

_{x_{1}}

_{1 - x_{1}}

As multilayer spherical quantum dots. Within the effective mass approximation, the Schrödinger equation is numerically solved using the finite element method. Thermodynamic quantities such as internal energy, heat capacity, and entropy are computed from the energy spectrum via the canonical ensemble formalism. The results reveal that these quantities vary significantly with structural parameters and external perturbations. This study provides insights into the interplay between geometry, magnetic field, and thermal activation in determining the thermodynamic response of quantum-confined systems.

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多层球形量子点的热力学性质：约束、温度和磁场依赖性

我们研究了温度变化、约束条件和磁场强度如何影响GaAs/Alx1Ga1−x1As多层球形量子点的热力学行为。在有效质量近似范围内，采用有限元法对Schrödinger方程进行了数值求解。热力学量如内能、热容和熵是通过正则系综形式从能谱中计算出来的。结果表明，这些量随结构参数和外部扰动而显著变化。本研究提供了几何、磁场和热激活之间的相互作用，以确定量子受限系统的热力学响应。

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