Anisotropic thermal conductivity of semiconducting graphene monoxide

被引：21
作者：
Pu, H. H. [1 ,2 ]
Rhim, S. H. [2 ,3 ]
Hirschmugl, C. J. [2 ,3 ]
Gajdardziska-Josifovska, M. [2 ,3 ]
Weinert, M. [2 ,3 ]
Chen, J. H. [1 ,2 ]
机构：
[1] Univ Wisconsin, Dept Mech Engn, Milwaukee, WI 53211 USA
[2] Univ Wisconsin, Surface Studies Lab, Milwaukee, WI 53211 USA
[3] Univ Wisconsin, Dept Phys, Milwaukee, WI 53211 USA
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 22期
基金：
美国国家科学基金会;
关键词：
FILMS; TRANSPORT;
D O I：
10.1063/1.4808448
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The intrinsic thermal conductivity of monolayer graphene monoxide is determined via first-principles calculations. The phonon transport in graphene monoxide is anisotropic, with the lattice thermal conductivity along the armchair direction (center dot center dot center dot C-2O-C center dot center dot center dot) about five times higher than that along the zigzag (center dot center dot center dot C-C center dot center dot center dot) direction. The predicted thermal conductivity (>3000Wm(-1)K(-1) at 300K) of graphene monoxide is 80% of that of graphene along the armchair direction for large sample lateral sizes (>5 mu m). In addition, heat is predominantly carried by longitudinal acoustic phonons along the armchair direction, while the contribution from the transverse acoustic phonon mode is prevalent along the zigzag direction. (C) 2013 AIP Publishing LLC.
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页数：5
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