Lattice Thermal Conductivity of Graphene

被引：2
|
作者：
Kamatagi, M. D. [1 ]
Nissimagoudar, A. S. [2 ]
Sankeshwar, N. S.
Mulimani, B. G. [2 ]
机构：
[1] Govt First Grade Coll, Sira 572137, Karnataka, India
[2] Karnatak Univ, Dept Phys, Dharwad 580003, Karnataka, India
来源：
SOLID STATE PHYSICS, PTS 1 AND 2 | 2012年 / 1447卷
关键词：
Thermal conductivity; phonon scattering mechanisms; graphene;
D O I：
10.1063/1.4710315
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Wide temperature range (4<T<400 K) lattice thermal conductivity, kappa(p) of graphene is studied. Explicit contributions from in-plane longitudinal (LA) and transverse (TA) acoustic phonons and out-of-plane flexural (ZA) phonons are taken into account. The phonons are assumed to be scattered by sample boundaries, impurities and other phonons via umklapp process. Numerical results presented show that, at low temperatures, ZA phonon contribution is dominant, whereas at higher temperatures LA phonon becomes important. Good fits with the available thermal conductivity data are obtained. The study brings out relative importance of scattering by the three modes of acoustic phonon modes.
引用
收藏
页码：945 / +
页数：2
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