Heat Conduction in a Three Dimensional Anharmonic Crystal

被引：67

作者：

Saito, Keiji ^{[1
,2
]}

Dhar, Abhishek ^{[3
]}

机构：

[1] Univ Tokyo, Grad Sch Sci, Tokyo 1130033, Japan

[2] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[3] Raman Res Inst, Bangalore 560080, Karnataka, India

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 04期

关键词：

THERMAL-CONDUCTIVITY; DIMENSIONAL LATTICES;

D O I：

10.1103/PhysRevLett.104.040601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 kappa. 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 kappa and thus provides the first verification of Fourier's law in a system without pinning.

引用

页数：4

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