近三角形量子阱中氢供体的光电离截面

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Pub Date : 2022-12-24 DOI:10.1080/14786435.2022.2157505

S. Ramyapriya, M. Arulmozhi

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引用次数: 0

摘要

本文计算了GaAs/Ga1-xAlxAs组成的近三角形量子阱(NTQW)中氢供体的基态和第一激发态结合能随阱宽和Al浓度的变化而变化。还研究了供体的光电离截面与光子能量、阱宽度和铝浓度的关系。我们的结果表明，在Al浓度为0.3时，光电离截面的峰值在结合能最大的阱宽处出现翻转。与其他纳米结构相比，NTQW中的光离对阱宽、Al浓度和光子能量有很强的依赖性。

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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Photo-ionisation cross-section of a hydrogenic donor in a near triangular quantum well

ABSTRACT Ground state and first excited state binding energies of a hydrogenic donor in a near triangular quantum Well (NTQW) composed of GaAs/Ga1-xAlxAs are calculated variationally as a function of well width and Al concentration. Photo-ionisation cross-section of the donor is also investigated as a function of photon energy, well width and Al concentration. Our results reveal that the peak value of photo-ionisation cross-section shows a turnover at the well width at which the binding energy is a maximum and at the Al concentration of 0.3. Photo-ionisation shows a strong dependence on well width, Al concentration and photon energy in NTQW than in other nanostructures.

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来源期刊

Philosophical Magazine 工程技术-材料科学：综合

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0.00%

发文量

审稿时长

4.7 months

期刊介绍： The Editors of Philosophical Magazine consider for publication contributions describing original experimental and theoretical results, computational simulations and concepts relating to the structure and properties of condensed matter. The submission of papers on novel measurements, phases, phenomena, and new types of material is encouraged.