Three-phonon Umklapp process in zigzag single-walled carbon nanotubes

被引：30

作者：

Xiao, Y

Yan, XH ^{[1
]}

Cao, JX

Ding, JW

机构：

[1] Xiangtan Univ, Dept Phys, Xiangtan 411105, Hunan, Peoples R China

[2] Xiangtan Univ, Inst Modern Phys, Xiangtan 411105, Hunan, Peoples R China

[3] Xiangtan Univ, Inst Mech & Mat Engn, Xiangtan 411105, Hunan, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 23期

关键词：

D O I：

10.1088/0953-8984/15/23/101

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The rate of relaxation of zigzag single-walled carbon nanotubes is calculated by consideration of three-phonon Umklapp process. The results show that the relaxation rate increases exponentially with phonon frequency at low frequency. The linear dependence of the relaxation rate on temperature is obtained. It is shown that the value of the phonon mean free path reaches a few micrometres, which is consistent with the estimated experimental result.

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页码：L341 / L347

页数：7

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