Thermal conductivity of twisted bilayer graphene | |
Li, Hongyang ; Ying, Hao ; Chen, Xiangping ; Nika, Denis ; Cocemasov, Alexandr I. ; Cai, Weiwei ; Balandin, Alexander A. ; Chen, Shanshan ; Cai WW(蔡伟伟) ; Chen SS(陈珊珊) | |
刊名 | http://dx.doi.org/10.1039/c4nr04455j
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2014 | |
关键词 | Graphene Phonons |
英文摘要 | We have investigated experimentally the thermal conductivity of suspended twisted bilayer graphene. The measurements were performed using an optothermal Raman technique. It was found that the thermal conductivity of twisted bilayer graphene is lower than that of monolayer graphene and the reference, Bernal stacked bilayer graphene in the entire temperature range examined (~300-700 K). This finding indicates that the heat carriers-phonons-in twisted bilayer graphene do not behave in the same manner as that observed in individual graphene layers. The decrease in the thermal conductivity found in twisted bilayer graphene was explained by the modification of the Brillouin zone due to plane rotation and the emergence of numerous folded phonon branches that enhance the phonon Umklapp and normal scattering. The results obtained are important for understanding thermal transport in two-dimensional systems. This journal is |
语种 | 英语 |
出版者 | Royal Society of Chemistry |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/92202] ![]() |
专题 | 物理技术-已发表论文 |
推荐引用方式 GB/T 7714 | Li, Hongyang,Ying, Hao,Chen, Xiangping,et al. Thermal conductivity of twisted bilayer graphene[J]. http://dx.doi.org/10.1039/c4nr04455j,2014. |
APA | Li, Hongyang.,Ying, Hao.,Chen, Xiangping.,Nika, Denis.,Cocemasov, Alexandr I..,...&陈珊珊.(2014).Thermal conductivity of twisted bilayer graphene.http://dx.doi.org/10.1039/c4nr04455j. |
MLA | Li, Hongyang,et al."Thermal conductivity of twisted bilayer graphene".http://dx.doi.org/10.1039/c4nr04455j (2014). |
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