Intriguing heat conduction of a chain with transverse motions

被引：110

作者：

Wang, JS ^{[1
]}

Li, BW

机构：

[1] Natl Univ Singapore, Singapore MIT Alliance, Singapore 117543, Singapore

[2] Natl Univ Singapore, Dept Computat Sci, Singapore 117543, Singapore

[3] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.92.074302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study heat conduction in a one-dimensional chain of particles with longitudinal as well as transverse motions. The particles are connected by two-dimensional harmonic springs together with bending angle interactions. Using equilibrium and nonequilibrium molecular dynamics, three types of thermal conducting behaviors are found: a logarithmic divergence with system sizes for large transverse coupling, 1/3 power law at intermediate coupling, and 2/5 power law at low temperatures and weak coupling. The results are consistent with a simple mode-coupling analysis of the same model. We suggest that the 1/3 power-law divergence should be a generic feature for models with transverse motions.

引用

页数：4

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