Heat conduction in a three dimensional anharmonic crystal

Saito, Keiji ; Dhar, Abhishek (2010) Heat conduction in a three dimensional anharmonic crystal Physical Review Letters, 104 (4). 040601_1-040601_4. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v104/i4/e040601

Related URL: http://dx.doi.org/10.1103/PhysRevLett.104.040601

Abstract

We perform nonequilibrium simulations of heat conduction in a three dimensional anharmonic lattice. By studying slabs of length N and width W, we examine the crossover from one dimensional to three dimensional behavior of the thermal conductivity κ. We find that for large N, the crossover takes place at a small value of the aspect ratio W/N. From our numerical data we conclude that the three dimensional system has a finite nondiverging κ and thus provides the first verification of Fourier's law in a system without pinning.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:79671
Deposited On:28 Jan 2012 12:11
Last Modified:18 May 2016 21:57

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