Aharonov-Bohm spectral features and coherence lengths in carbon nanotubes

被引:120
作者
Roche, S [1 ]
Dresselhaus, G
Dresselhaus, MS
Saito, R
机构
[1] Univ Valladolid, Dept Fis Teor, E-47011 Valladolid, Spain
[2] CEA, DRFMC, SPSMS, F-38042 Grenoble, France
[3] MIT, Francis Bitter Natl Magnet Lab, Cambridge, MA 02139 USA
[4] MIT, Dept Phys, Cambridge, MA 02139 USA
[5] MIT, Dept Elect Engn & Comp Engn, Cambridge, MA 02139 USA
[6] Univ Electrocommun, Dept Elect Engn, Chofu, Tokyo 1828585, Japan
来源
PHYSICAL REVIEW B | 2000年 / 62卷 / 23期
关键词
D O I
10.1103/PhysRevB.62.16092
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The electronic properties of carbon nanotubes are investigated in the presence of disorder and a magnetic field parallel or perpendicular to the nanotube axis. In the parallel field geometry, the phi (0)-periodic (40 = hc/e) metal-insulator transition induced in metallic or semiconducting nanotubes is shown to be related to a chirality-dependent shifting of the energy of the van Hove singularities (VHS's). The effect of disorder on this magnetic-field-related mechanism is considered with a discussion of mean free paths, localization lengths, and magnetic dephasing rate in the context of recent experiments.
引用
收藏
页码:16092 / 16099
页数:8
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