Anomalous Heat Conduction in One-Dimensional Dimerized Lattices  

作　　者：李新霞 唐翌 

机构地区：[1]Department of Mathematics and Physics, Nanhua University, Hengyang 421001 [2]Institute of Modern Physics, Xiangtan University, Xiangtan 411105

出　　处：《Chinese Physics Letters》2007年第4期898-901,共4页中国物理快报（英文版）

摘　　要：The process of heat conduction in one-dimensional dimerized systems is studied by means of numerical simulation. Taking into account the difference between the strong bond and the weak one of the systems, our calculation indicates that heat conduction in the lattice is anomalous. For the typical parameter related to a real physical system, the divergent exponent is shown to be in agreement with that predicted by the mode-coupling theory. Moreover, our study shows that the homogeneous chain is the best thermal conductor.The process of heat conduction in one-dimensional dimerized systems is studied by means of numerical simulation. Taking into account the difference between the strong bond and the weak one of the systems, our calculation indicates that heat conduction in the lattice is anomalous. For the typical parameter related to a real physical system, the divergent exponent is shown to be in agreement with that predicted by the mode-coupling theory. Moreover, our study shows that the homogeneous chain is the best thermal conductor.

关 键 词：THERMAL-CONDUCTIVITY TRANSPORT DYNAMICS CHAINS 

分 类 号：O414[理学—理论物理]