Low-temperature specific heat of double wall carbon nanotubes

被引：10

作者：

Xiang, B.

Tsai, C. B.

Lee, C. J.

Yu, D. P.

Chen, Y. Y. ^{[1
]}

机构：

[1] Acad Sinica, Inst Phys, Taipei 115, Taiwan

[2] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[3] Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China

[4] Hanyang Univ, Dept Nanotechnol, Seoul 133791, South Korea

来源：

SOLID STATE COMMUNICATIONS | 2006年 / 138卷 / 10-11期

关键词：

carbon nanotubes; low-temperature specific heat; shear modulus;

D O I：

10.1016/j.ssc.2006.04.022

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the analysis on the low-temperature specific heat of the double-walled carbon nanotubes (DWNTs) in the temperature range between 0.3 and 30 K, in comparison with that of the single-walled carbon nanotubes (SWNTs). The low-temperature specific heat of the SWNTs can be analyzed in terms of the acoustic phonon modes and the neighboring-tube interactions (alpha T-3), which are in good agreement with earlier reports. The low-temperature specific heat of the DWNTs is smaller than that of the SWNTs. Taking account of the theoretical framework of the DWNT proposed by Damnjanovic et al. and the neighboring-tube interactions (CT3), the measured low-temperature specific heat of the DWNTs is well consistent with the theoretical predication. Our experimental results indicate that the neighboring-tube and intralayer interactions are not negligible in the low-temperature specific heat of the DWNTs. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：516 / 520

页数：5

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