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arXiv 1305.0908cond-mat.mes-hall
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核/壳/阱/壳球形量子点的电子性质

The electronic properties of a core/shell/well/shell spherical quantum dot with and without a hydrogenic impurity

Hatice Taş, Mehmet Sahin

摘要:

在这项研究中,我们进行了详细的研究,核/壳/阱/壳多层球形量子点的电子性质,如能量本征值,波函数,电子概率分布和结合能。计算了有和无中心杂质情况下所考虑结构的能量本征值及其波函数。为此,在有效质量近似下,用打靶法数值求解了有限约束势下的薛定谔方程。在一定的势阱下,研究了不同芯半径、势垒厚度和阱宽下的电子性质。详细分析了其随层厚变化的规律,并解释了其物理原因。研究发现,薄膜的电子性质与薄膜厚度有很强的依赖关系。

英文摘要:

In this study, we have performed a detailed investigation of the electronic properties of a core/shell/well/shell multi-layered spherical quantum dot, such as energy eigenvalues, wave functions, electron probability distribution and binding energies. The energy eigenvalues and their wave functions of the considered structure have been calculated for cases with and without an on-center impurity. For this purpose, the Schrödinger equation has been numerically solved by using the shooting method in the effective mass approximation for a finite confining potential. The electronic properties have been examined for different core radii, barrier thickness and well widths in a certain potential. The results have been analyzed in detail as a function of the layer thickness and their physical reasons have been interpreted. It has found that the electronic properties are strongly depending on the layer thickness.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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