Bardeen-Cooper-Schrieffer formalism of superconductivity in carbon nanotubes

被引：2
|
作者：
Lang, Shi-Dong [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 13-16期
关键词：
BCS theory; carbon nanotube;
D O I：
10.1016/j.physb.2007.12.007
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We develop the Bardeen-Cooper-Schrieffer (BCS) formalism for the superconductivity of carbon nanotubes. It is found that the superconducting transition temperature T-c of single-wall carbon nanotubes decreases exponentially with the increase of the tube diameter because the density of states near the Fermi energy is inversely proportional to the tube diameter. For the multi-wall carbon nanotubes, the Cooper paring hopping between layers enhances the superconducting correlation and increases the superconducting transition temperature, which is consistent with the experimental observation. (c) 2008 Elsevier B.V. All rights reserved.
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页码：2288 / 2292
页数：5
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