Heat transport in multilayer abrupt graphene junctions modulated with convexity-shaped quantum structure

被引：13

作者：

Peng, Xiao-Fang ^{[1
]}

Wang, Xin-Jun ^{[1
]}

Chen, Li-Qun ^{[1
]}

Chen, Ke-Qiu ^{[2
]}

机构：

[1] Cent S Univ Forestry & Technol, Inst Math & Phys, Changsha 410004, Hunan, Peoples R China

[2] Hunan Univ, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China

来源：

EPL | 2012年 / 98卷 / 05期

基金：

中国国家自然科学基金;

关键词：

THERMAL-CONDUCTIVITY;

D O I：

10.1209/0295-5075/98/56001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By using the force-constant and elastic wave continuum models, we investigate the ballistic phonon transport and thermal conductance in multilayer zigzag graphene nanoribbon junctions modulated with convexity-shaped quantum structures at low temperatures. The results show that the convexity-shaped (T-shaped or H-shaped) quantum structure can enhance thermal conductance at very low temperatures. The enhancement originates from the increased attenuation length of the evanescent modes in convexity-shaped quantum structures. A brief analysis of these results is given. Copyright (C) EPLA, 2012

引用

页数：4

共 35 条

[1] Superior thermal conductivity of single-layer graphene [J].

Balandin, Alexander A. ;

Ghosh, Suchismita ;

Bao, Wenzhong ;

Calizo, Irene ;

Teweldebrhan, Desalegne ;

Miao, Feng ;

Lau, Chun Ning .

NANO LETTERS, 2008, 8 (03) :902-907

[2]

Balandin AA, 2011, NAT MATER, V10, P569, DOI [10.1038/nmat3064, 10.1038/NMAT3064]

[3] Thermal Transport in Suspended and Supported Monolayer Graphene Grown by Chemical Vapor Deposition [J].

Cai, Weiwei ;

Moore, Arden L. ;

Zhu, Yanwu ;

Li, Xuesong ;

Chen, Shanshan ;

Shi, Li ;

Ruoff, Rodney S. .

NANO LETTERS, 2010, 10 (05) :1645-1651

[4] The electronic properties of graphene [J].

Castro Neto, A. H. ;

Guinea, F. ;

Peres, N. M. R. ;

Novoselov, K. S. ;

Geim, A. K. .

REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :109-162

[5] Effect of defects on the thermal conductivity in a nanowire [J].

Chen, KQ ;

Li, WX ;

Duan, W ;

Shuai, Z ;

Gu, BL .

PHYSICAL REVIEW B, 2005, 72 (04)

[6]

Graff KF, 1991, Wave motion in elastic solids

[7] Thermal conductivity of graphene nanoribbons [J].

Guo, Zhixin ;

Zhang, Dier ;

Gong, Xin-Gao .

APPLIED PHYSICS LETTERS, 2009, 95 (16)

[8] Nonlinear thermal transport and negative differential thermal conductance in graphene nanoribbons [J].

Hu, Jiuning ;

Wang, Yan ;

Vallabhaneni, Ajit ;

Ruan, Xiulin ;

Chen, Yong P. .

APPLIED PHYSICS LETTERS, 2011, 99 (11)

[9] Thermal Conductivity and Thermal Rectification in Graphene Nanoribbons: A Molecular Dynamics Study [J].

Hu, Jiuning ;

Ruan, Xiulin ;

Chen, Yong P. .

NANO LETTERS, 2009, 9 (07) :2730-2735

[10] Isotopic effects on the thermal conductivity of graphene nanoribbons: Localization mechanism [J].

Jiang, Jin-Wu ;

Lan, Jinghua ;

Wang, Jian-Sheng ;

Li, Baowen .

JOURNAL OF APPLIED PHYSICS, 2010, 107 (05)

← 1 2 3 4 →