Heat transport in coupled inhomogeneous chains

doi:10.1088/1674-1056/20/6/060508

中国物理B ›› 2011, Vol. 20 ›› Issue (6): 60508-060508.doi: 10.1088/1674-1056/20/6/060508

Heat transport in coupled inhomogeneous chains

胡涛, 白萌, 胡柯, 唐翌

Department of Physics, Xiangtan University, Xiangtan 411105, China

收稿日期:2010-10-26 修回日期:2010-12-17 出版日期:2011-06-15 发布日期:2011-06-15
基金资助:
Project supported by the Key Project of the Educational Department of Hunan Province of China (Grant No. 04A058).

Heat transport in coupled inhomogeneous chains

Hu Tao (胡涛), Bai Meng (白萌), Hu Ke (胡柯), Tang Yi (唐翌)

Department of Physics, Xiangtan University, Xiangtan 411105, China

Received:2010-10-26 Revised:2010-12-17 Online:2011-06-15 Published:2011-06-15
Supported by:
Project supported by the Key Project of the Educational Department of Hunan Province of China (Grant No. 04A058).

摘要/Abstract

摘要： We first investigate the heat transport in a network model consisting of two coupled dimerized chains. Results indicate that the thermal resistance of each chain increases with the decrease of the mass ratio γ of the two types of atoms. Then, we find, when a light impurity or a heavy one is added in the two coupled homogeneous chains and coupled with a particle of another chain, the interface thermal resistances R_int^l and R_int^r present different dependences on the mass ratio γ'. Finally, a persistent circulation of energy current is observed in coupled inhomogeneous chains with two pairs of interchain coupling.

关键词: heat transport, thermal resistance

Abstract: We first investigate the heat transport in a network model consisting of two coupled dimerized chains. Results indicate that the thermal resistance of each chain increases with the decrease of the mass ratio $\gamma$ of the two types of atoms. Then, we find, when a light impurity or a heavy one is added in the two coupled homogeneous chains and coupled with a particle of another chain, the interface thermal resistances $R_{\rm int}^l$ and $R_{\rm int}^r$ present different dependences on the mass ratio $\gamma'$. Finally, a persistent circulation of energy current is observed in coupled inhomogeneous chains with two pairs of interchain coupling.

Key words: heat transport, thermal resistance

中图分类号: (Nonequilibrium and irreversible thermodynamics)

05.70.Ln

44.10.+i (Heat conduction) 05.45.-a (Nonlinear dynamics and chaos)

胡涛, 白萌, 胡柯, 唐翌. Heat transport in coupled inhomogeneous chains[J]. 中国物理B, 2011, 20(6): 60508-060508.

Hu Tao (胡涛), Bai Meng (白萌), Hu Ke (胡柯), Tang Yi (唐翌). Heat transport in coupled inhomogeneous chains[J]. Chin. Phys. B, 2011, 20(6): 60508-060508.

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Heat transport in coupled inhomogeneous chains

Heat transport in coupled inhomogeneous chains

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