期刊论文

Chen Li-Qun;Peng Xiao-Fang

中文

物理学报

1000-3290

2016

65

8

086301-1-086301-13

10.7498/aps.65.086301

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11247030]; Natural Science Foundation of Hunan Province, ChinaNatural Science Foundation of Hunan Province [14JJ4054]; Open Research Fund of the Hunan Province Higher Education Key Laboratory of Modeling and Monitoring on the Near-Earth Electromagnetic Environments, Changsha University of Science and Technology, China [20150103]; Talent Introducing Foundation of Central South University of Forestry and Technology, China [104-0160]; Natural Science Foundation of Jiangxi Province, ChinaNatural Science Foundation of Jiangxi Province [20122BAB212009]; Scientific Research Fund of Jiangxi Provincial Education Department of China [GJJ12601]

本校为第一且通讯机构

采用非平衡格林函数方法, 在保持总的能量输出通道中石墨链数不变的条件下, 研究并比较了并列的石墨纳米带通道中弹性声学声子输运和热导特性. 结果表明, 能量输出通道的增加能降低每个能量输出通道的热导; 与能量输入热库最近的能量输出通道热导最大, 最远的能量输出通道热导最小; 中间能量输出通道的热导性质与并列的各输出通道的结构参数密切相关, 最近和最远的能量输出通道的热导性质仅与各自能量输出通道的结构参数有关; 粗糙边缘结构能有效调节各通道的热导; 总的热导性质与能量输出通道石墨链数、能量输出通道数以及边缘结构粗糙程度密切相关.

By using non-equilibrium Green's function method, we investigate the transmission rate of acoustic phonon and thermal conductance through a parallel multi-terminal graphene junctions, the relationship between the thermal-transport property in each terminal and the number of quantum terminals, the relationship between the thermal-transport property in each terminal and the relative position of quantum terminals in quantum structure, and also study the thermaltransport property in each terminal and the rough degree of edge structure. The results ...