Title
|
|
|
|
Low-temperature specific heat of nanotube systems
| |
Author
|
|
|
|
| |
Abstract
|
|
|
|
The low-temperature specific heat of single-walled carbon nanotubes (isolated and bundled) and multiwalled carbon nanotubes is calculated within force-constant dynamical models. It is shown that, due to the quadratic dependence of the frequency omega of the transverse-acoustic phonons on the wave number q, the phonon density of states has a singularity of the type 1/rootomega and the very low-temperature specific heat varies as rootT with the temperature T. With the increase of the diameter of the system, the contributions of the longitudinal- and torsional-acoustic phonons to the specific heat begin to prevail and the latter becomes linear in T. These results are confirmed by the recent experimental data. |
| |
Language
|
|
|
|
English
| |
Source (journal)
|
|
|
|
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
| |
Publication
|
|
|
|
Lancaster, Pa
:
2002
| |
ISSN
|
|
|
|
1098-0121
[print]
1550-235X
[online]
| |
Volume/pages
|
|
|
|
66
:15
(2002)
, p. 1-4
| |
Article Reference
|
|
|
|
153408
| |
ISI
|
|
|
|
000179080800037
| |
Medium
|
|
|
|
E-only publicatie
| |
Full text (Publisher's DOI)
|
|
|
|
| |
Full text (open access)
|
|
|
|
| |
|