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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 |
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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.
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Received: 26 October 2010
Revised: 17 December 2010
Accepted manuscript online:
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PACS:
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05.70.Ln
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(Nonequilibrium and irreversible thermodynamics)
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44.10.+i
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(Heat conduction)
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05.45.-a
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(Nonlinear dynamics and chaos)
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05.06.Cd
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| Fund: Project supported by the Key Project of the Educational Department of Hunan Province of China (Grant No. 04A058). |
Cite this article:
Hu Tao (胡涛), Bai Meng (白萌), Hu Ke (胡柯), Tang Yi (唐翌) Heat transport in coupled inhomogeneous chains 2011 Chin. Phys. B 20 060508
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