The intrinsic temperature effect of Raman spectra of double-walled carbon nanotubes

被引：23

作者：

Zhou, ZP

Ci, L

Song, L

Yan, XQ

Liu, DF

Yuan, HJ

Gao, Y

Wang, JX

Liu, LF

Zhou, WY

Xie, SS

Du, YX

Mo, YJ

机构：

[1] Chinese Acad Sci, Ctr Condensed Matter Phys, Inst Phys, Grp A05, Beijing 100080, Peoples R China

[2] Henan Univ, Dept Phys, Kaifeng 475001, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 396卷 / 4-6期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.cplett.2004.08.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The temperature-dependent Raman shift of double-walled carbon nanotubes (DWNTs) has been investigated in detail. It was found that radial breathing mode (RBM) frequencies of DWNTs have a linear dependence on the sample temperature, but different RBM frequencies correspond to completely different temperature coefficients. The frequency-dependent temperature coefficient has been investigated and attributed to the intershell effect in DWNTs. In comparison, G-band of DWNTs has a nonlinear or second-order polynomial relation with the increased temperature. The deviation from the linear trend has been revealed to be due to the contribution of the third- and fourth-order anharmonic term in the lattice potential energy with pure temperature effect. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：372 / 376

页数：5

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