Static quantum dot on a large potential hilltop for generating and analyzing hot electrons in the quantum Hall regime

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Physical Review Applied Pub Date : 2024-09-18 DOI:10.1103/physrevapplied.22.034043

Ryo Oishi, Yuto Hongu, Tokuro Hata, Chaojing Lin, Takafumi Akiho, Koji Muraki, Toshimasa Fujisawa

引用次数: 0

Abstract

We propose and demonstrate a static quantum dot on a potential hilltop to generate and analyze ballistic hot electrons along a quantum Hall edge channel well above the chemical potential. High-energy resolution associated with discrete energy levels is attractive for studying hot-electron dynamics. In particular, the energy distribution function of hot electrons weakly coupled to cold electrons is investigated to reveal spectral diffusion with energy relaxation. The analysis allows us to estimate the maximum energy exchange per scattering, which is a key parameter to describe interacting electrons in the edge channel.

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大电势山顶上的静态量子点，用于产生和分析量子霍尔机制中的热电子

我们提出并演示了一种静态量子点，该量子点位于化学势山顶，可沿着量子霍尔边缘通道产生并分析远高于化学势的弹道热电子。与离散能级相关的高能分辨率对于研究热电子动力学非常有吸引力。特别是，我们研究了与冷电子弱耦合的热电子的能量分布函数，以揭示能量弛豫的光谱扩散。通过分析，我们可以估算出每次散射的最大能量交换，这是描述边缘通道中相互作用电子的一个关键参数。

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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来源期刊

Physical Review Applied PHYSICS, APPLIED-

CiteScore

7.80

自引率

8.70%

发文量

760

审稿时长

2.5 months

期刊介绍： Physical Review Applied (PRApplied) publishes high-quality papers that bridge the gap between engineering and physics, and between current and future technologies. PRApplied welcomes papers from both the engineering and physics communities, in academia and industry. PRApplied focuses on topics including: Biophysics, bioelectronics, and biomedical engineering, Device physics, Electronics, Technology to harvest, store, and transmit energy, focusing on renewable energy technologies, Geophysics and space science, Industrial physics, Magnetism and spintronics, Metamaterials, Microfluidics, Nonlinear dynamics and pattern formation in natural or manufactured systems, Nanoscience and nanotechnology, Optics, optoelectronics, photonics, and photonic devices, Quantum information processing, both algorithms and hardware, Soft matter physics, including granular and complex fluids and active matter.