绝缘体砷化镓中极弱的亚开尔文电子-声子耦合

IF 3.5 2区 物理与天体物理 Q2 PHYSICS, APPLIED
Sebastiano Battisti, Giorgio De Simoni, Alessandro Braggio, Alessandro Paghi, Lucia Sorba, Francesco Giazotto
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引用次数: 0

摘要

我们提出了一种混合超导体-半导体平台,该平台使用生长在绝缘层砷化铟铝异质结构(InAsOI)上的砷化铟(InAs)作为相干热电子器件的理想候选材料。这些器件旨在加热或冷却电子,使其脱离声子自由度的平衡状态。然而,它们的性能通常受到电子-声子(e-phon)耦合强度和相关功率损耗的限制。我们的工作讨论了 InAsOI 平台的优势,这些优势基于与全金属先进热电子器件相比测量到的显著较低的电子-声子耦合。我们的结构所显示的 e-ph 耦合常数比金属结构的典型值小两个数量级。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Extremely weak sub-Kelvin electron–phonon coupling in InAs on Insulator
We are proposing a hybrid superconductor–semiconductor platform using indium arsenide (InAs) grown on an insulating layer of indium aluminum arsenide heterostructure (InAsOI) as an ideal candidate for coherent caloritronic devices. These devices aim to heat or cool electrons out of equilibrium with respect to the phonon degree of freedom. However, their performances are usually limited by the strength of the electron–phonon (e-ph) coupling and the associated power loss. Our work discusses the advantages of the InAsOI platform, which are based on the significantly low e-ph coupling measured compared to all-metallic state-of-the-art caloritronic devices. Our structure demonstrates values of the e-ph coupling constant up to two orders of magnitude smaller than typical values in metallic structures.
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来源期刊
Applied Physics Letters
Applied Physics Letters 物理-物理:应用
CiteScore
6.40
自引率
10.00%
发文量
1821
审稿时长
1.6 months
期刊介绍: Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.
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