单层与少层石墨烯的热传导
介观与纳米尺度物理
2010-12-30 v2 材料科学
摘要
我们报告了典型石墨烯晶体管接触中Au/Ti/石墨烯/SiO₂界面（石墨烯层数1 < n < 10）的热导G。我们发现，即使在n=1时，室温下的G约为25 MW m⁻² K⁻¹，比Au/Ti/SiO₂界面的热导小四倍。我们将这种降低归因于Au/Ti/石墨烯和石墨烯/SiO₂界面串联作用的热阻。在50 < T < 500 K范围内G的温度依赖性也表明，热量主要通过声子通过这些界面传输。我们的发现表明，金属接触不仅会限制电传输，还会限制亚微米石墨烯器件的热耗散。
引用
@article{arxiv.1009.5151,
title = {Heat Conduction across Monolayer and Few-Layer Graphenes},
author = {Yee Kan Koh and Myung-Ho Bae and David G. Cahill and Eric Pop},
journal= {arXiv preprint arXiv:1009.5151},
year = {2010}
}
备注
22 pages, 4 figures, accepted for publication in Nano Letters (2010) This paper has been withdrawn by the authors upon request by Nano Letters. The paper will be available in Nano Letters very soon