Asymmetric heat conduction in nonlinear lattices

Bambi Hu, Lei Yang, Yong Zhang*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

275 Citations (Scopus)

Abstract

In this Letter, we conduct an extensive study of the two-segment Frenkel-Kontorova model. We show that the rectification effect of the heat flux reported in recent literature is possible only in the weak interfacial coupling limit. The rectification effect will be reversed when the properties of the interface and the system size change. These two types of asymmetric heat conduction are governed by different mechanisms though both are induced by nonlinearity. An intuitive physical picture is proposed to interpret the reversal of the rectification effect. Since asymmetric heat conduction depends critically on the properties of the interface and the system size, it is probably not an easy task to fabricate a thermal rectifier or thermal diode in practice.

Original languageEnglish
Article number124302
Number of pages4
JournalPhysical Review Letters
Volume97
Issue number12
DOIs
Publication statusPublished - 22 Sept 2006

Scopus Subject Areas

  • Physics and Astronomy(all)

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