{"title":"Static quantum dot on a large potential hilltop for generating and analyzing hot electrons in the quantum Hall regime","authors":"Ryo Oishi, Yuto Hongu, Tokuro Hata, Chaojing Lin, Takafumi Akiho, Koji Muraki, Toshimasa Fujisawa","doi":"10.1103/physrevapplied.22.034043","DOIUrl":null,"url":null,"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.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"53 1","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review Applied","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevapplied.22.034043","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
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.
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.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
