Effective-mass theory of carbon nanotubes with vacancy

被引:57
作者
Ando, T
Nakanishi, T
Igami, M
机构
[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan
[2] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[3] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
关键词
graphite; carbon nanotube; vacancy; conductance; effective-mass theory;
D O I
10.1143/JPSJ.68.3994
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Effects of impurities with a strong and short-range potential are studied in carbon nanotubes within a k . p scheme. The calculated conductance approaches those obtained Ibr nanotubes with a lattice vacancy when the strength of the potential is sufficiently large. The conductance at epsilon = 0 is analytically shown to be quantized into zero, one, and two times or the conductance quantum e(2)/pi (h) over bar depending on the difference in the number or vacancies at A and B sublattices in nanotubes with a sufficiently large diameter.
引用
收藏
页码:3994 / 4008
页数:15
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