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DOI | 10.1126/science.aam9991 |
Imaging of nonlocal hot-electron energy dissipation via shot noise | |
Weng, Qianchun1,5; Komiyama, Susumu1,6; Yang, Le2,3; An, Zhenghua2,3,4; Chen, Pingping1; Biehs, Svend-Age7; Kajihara, Yusuke5; Lu, Wei1 | |
2018-05-18 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 360期号:6390页码:775-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Japan; Germany |
英文摘要 | In modern microelectronic devices, hot electrons accelerate, scatter, and dissipate energy in nanoscale dimensions. Despite recent progress in nanothermometry, direct real-space mapping of hot-electron energy dissipation is challenging because existing techniques are restricted to probing the lattice rather than the electrons. We realize electronic nanothermometry by measuring local current fluctuations, or shot noise, associated with ultrafast hot-electron kinetic processes (similar to 21 terahertz). Exploiting a scanning and contact-free tungsten tip as a local noise probe, we directly visualize hot-electron distributions before their thermal equilibration with the host gallium arsenide/aluminium gallium arsenide crystal lattice. With nanoconstriction devices, we reveal unexpected nonlocal energy dissipation at room temperature, which is reminiscent of ballistic transport of low-temperature quantum conductors. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432473500045 |
WOS关键词 | BALLISTIC TRANSPORT ; CONDUCTORS ; DEVICES ; SEMICONDUCTORS ; SCATTERING ; RADIATION ; GRAPHENE ; SURFACE ; GAAS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/198704 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China; 2.Fudan Univ, Dept Phys, Minist Educ, Inst Nanoelect Devices & Quantum Comp,State Key L, Shanghai 200433, Peoples R China; 3.Fudan Univ, Dept Phys, Minist Educ, Key Lab Micro & Nano Photon Struct, Shanghai 200433, Peoples R China; 4.Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China; 5.Univ Tokyo, Inst Ind Sci, Meguro Ku, Komaba 4-6-1, Tokyo 1538505, Japan; 6.Univ Tokyo, Dept Basic Sci, Meguro Ku, Komaba 3-8-1, Tokyo 1538902, Japan; 7.Carl von Ossietzky Univ Oldenburg, Inst Phys, D-26111 Oldenburg, Germany |
推荐引用方式 GB/T 7714 | Weng, Qianchun,Komiyama, Susumu,Yang, Le,et al. Imaging of nonlocal hot-electron energy dissipation via shot noise[J]. SCIENCE,2018,360(6390):775-+. |
APA | Weng, Qianchun.,Komiyama, Susumu.,Yang, Le.,An, Zhenghua.,Chen, Pingping.,...&Lu, Wei.(2018).Imaging of nonlocal hot-electron energy dissipation via shot noise.SCIENCE,360(6390),775-+. |
MLA | Weng, Qianchun,et al."Imaging of nonlocal hot-electron energy dissipation via shot noise".SCIENCE 360.6390(2018):775-+. |
条目包含的文件 | 条目无相关文件。 |
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