气候变化领域集成服务门户(CCPortal): Imaging resonant dissipation from individual atomic defects in graphene

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DOI	10.1126/science.aan0877
	Imaging resonant dissipation from individual atomic defects in graphene
	Halbertal D.; Shalom M.B.; Uri A.; Bagani K.; Meltzer A.Y.; Marcus I.; Myasoedov Y.; Birkbeck J.; Levitov L.S.; Geim A.K.; Zeldov E.
发表日期	2017
ISSN	0036-8075
起始页码	1303
结束页码	1306
卷号	358 期号:6368
英文摘要	Conversion of electric current into heat involves microscopic processes that operate on nanometer length scales and release minute amounts of power. Although central to our understanding of the electrical properties of materials, individual mediators of energy dissipation have so far eluded direct observation. Using scanning nanothermometry with submicrokelvin sensitivity, we visualized and controlled phonon emission from individual atomic-scale defects in graphene. The inferred electron-phonon “cooling power spectrum” exhibits sharp peaks when the Fermi level comes into resonance with electronic quasi-bound states at such defects. Rare in the bulk but abundant at graphene’s edges, switchable atomic-scale phonon emitters provide the dominant dissipation mechanism. Our work offers insights for addressing key materials challenges in modern electronics and enables control of dissipation at the nanoscale. © 2017, American Association for the Advancement of Science. All rights reserved.
英文关键词	graphene; carbon; electronic equipment; energy dissipation; thermometry; Article; chemical structure; electric current; molecular imaging; nanotechnology; phonon; power spectrum; priority journal; spectroscopy
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243917
作者单位	Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, 7610001, Israel; National Graphene Institute, School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United Kingdom; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Halbertal D.,Shalom M.B.,Uri A.,et al. Imaging resonant dissipation from individual atomic defects in graphene[J],2017,358(6368).
APA	Halbertal D..,Shalom M.B..,Uri A..,Bagani K..,Meltzer A.Y..,...&Zeldov E..(2017).Imaging resonant dissipation from individual atomic defects in graphene.Science,358(6368).
MLA	Halbertal D.,et al."Imaging resonant dissipation from individual atomic defects in graphene".Science 358.6368(2017).