Coulomb blockade regime of a single-wall carbon nanotube

被引：28
|
作者：
Nersesyan, AA
Tsvelik, AM
机构：
[1] Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy
[2] Andronikashvili Inst Phys, GE-380077 Tbilisi, Georgia
[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
来源：
PHYSICAL REVIEW B | 2003年 / 68卷 / 23期
关键词：
D O I：
10.1103/PhysRevB.68.235419
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study a model of carbon nanotube with a half filled conduction band. At this filling the system is a Mott insulator. The Coulomb interaction is assumed to be unscreened. It is shown that this allows to develop the adiabatic approximation which leads to considerable simplifications in calculations of the excitation spectrum. We give a detailed analysis of the spectrum and the phase diagram at half filling, and discuss effects of small doping. In the latter case several phases develop strong superconducting fluctuations corresponding to various types of pairing.
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页数：10
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