计算和设计可在低温下冻结振动模式的砷化镓量子点器件

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-06-06 DOI:10.1088/1361-6641/ad54e7

Georgios Stefanou, Charles Smith

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引用次数: 0

摘要

我们计算了独立砷化镓棒的振动模式频率如何随棒的几何特征（如长度、厚度和形状）而变化。在了解了物理特性的影响后，我们添加了用于在棒上定义量子点的指形栅极，并研究了系统与悬浮指形栅极的长度及其材料特性的函数关系。最后，我们加强了桥的强度，以使第一振动模式出现在 100 mK 或更高的温度下，这样在稀释冰箱中运行时，所有模式都能被冻结。

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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Calculation and design of GaAs quantum dot devices where the vibrational modes can be frozen out at cryogenic temperatures

We calculate how the frequencies of the vibrational modes in a free-standing GaAs bar are changed as a function of the bar’s geometrical features such as length, thickness and shape. After understanding the effect of the physical characteristics we add finger gates that will be used to define quantum dots on the bar and study the system as a function of the length of the suspended finger gates, and their material properties. Finally, we strengthen the bridges in in order that the first vibrational modes occur at a temperature of 100 mK or more, so that all modes can be frozen out when operated in a dilution refrigerator.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.