Effect of structural defects on the thermal conductivity of graphene: From point to line defects to haeckelites

被引：66

作者：

Fthenakis, Zacharias G. ^{[1
]}

Zhu, Zhen ^{[1
]}

Tomanek, David ^{[1
]}

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 12期

基金：

美国国家科学基金会;

关键词：

CARBON; DYNAMICS; TRANSPORT; ALLOTROPES; ALGORITHM;

D O I：

10.1103/PhysRevB.89.125421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We use nonequilibrium molecular-dynamics simulations to study the effect of structural defects on the thermal conductivity lambda of graphene. Focusing on 5-7 and 5-8 defects in the graphene honeycomb lattice, we find that lambda depends sensitively on whether the defects are isolated, form lines, or form extended arrangements in haeckelites. Our results indicate that the presence of defects makes lambda anisotropic and, depending on the temperature, quenches its value by one to two orders of magnitude with respect to graphene, mainly by reducing the phonon mean free path.

引用

页数：6

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