Effect of phonon-phonon interactions on localization

被引：75

作者：

Dhar, Abhishek ^{[1
]}

Lebowitz, J. L. ^{[2
]}

机构：

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

[2] Rutgers State Univ, Dept Math & Phys, Piscataway, NJ 08854 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 13期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.134301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the heat current J in a classical one-dimensional disordered chain with on-site pinning and with ends connected to stochastic thermal reservoirs at different temperatures. In the absence of anharmonicity all modes are localized and there is a gap in the spectrum. Consequently J decays exponentially with system size N. Using simulations we find that even a small amount of anharmonicity leads to a J similar to 1/N dependence, implying diffusive transport of energy.

引用

页数：4

共 59 条

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