一维介电原子链中的热传导研究  

Study of thermal conduction in 1D dielectric atomic chain

作　　者：张道华[1] 赵桂芳[1] 石大庆[1] 朱国良[1] 李金星[1] 

机构地区：[1]湖北师范学院物理与电子科学学院

出　　处：《湖北师范学院学报（自然科学版）》2011年第4期26-29,共4页Journal of Hubei Normal University(Natural Science)

摘　　要：运用Ford-Kac-Mazur(FKM)方法对一维介电原子链进行了研究,在固定和自由边界条件下得到了热流的具体表达式,通过数值模拟,给出了不同条件下热流随体系大小的变化趋势。通过对比我们发现,边界条件、有序与无序对一维介电原子链的热传导有很大的影响。另外,傅里叶定律在简单的介电原子链中不成立。The thermal transport in 1D dielectric atomic chain was studied by the Ford -Kac -Mazur （FKM） method in this paper. We obtained the specific expression of heat current under fixed and free boundary conditions. By numerical simulation, we get the picture of heat current verse to system size under different boundary conditions. By contrast we found that boundary conditions, order and disorder have played an important role for thermal transport in 1 D dielectic chain. In addition, the Fourier＇s law was not hold in dielectric harmonic chain.

关 键 词：傅立叶定律 热传导 低维系统 

分 类 号：O415[理学—理论物理]