Room temperature Peierls distortion in small diameter nanotubes -: art. no. 015503

被引：116
作者：
Connétable, D
Rignanese, GM
Charlier, JC
Blase, X
机构：
[1] CNRS, LPMCN, F-69622 Villeurbanne, France
[2] Univ Lyon 1, F-69622 Villeurbanne, France
[3] Univ Catholique Louvain, Unite Physicochim & Phys Mat, B-1348 Louvain, Belgium
[4] Univ Catholique Louvain, Res Ctr Microscop & Nanoscop Elect Devices & Mat, B-1348 Louvain, Belgium
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 01期
关键词：
D O I：
10.1103/PhysRevLett.94.015503
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By means of ab initio simulations, we investigate the phonon band structure and electron-phonon coupling in small 4-Angstrom diameter nanotubes. We show that both the C(5,0) and C(3,3) tubes undergo above room temperature a Peierls transition mediated by an acoustical long wavelength and an optical q=2k(F) phonon, respectively. In the armchair geometry, we verify that the electron-phonon coupling parameter lambda originates mainly from phonons at q=2k(F) and is strongly enhanced when the diameter decreases. These results question the origin of superconductivity in small diameter nanotubes.
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页数：4
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