Conductance quantization in the presence of huge and short-range potential in carbon nanotubes

被引：5
|
作者：
Nakanishi, T
Igami, M
Ando, T
机构：
[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[2] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
[3] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan
来源：
PHYSICA E | 2000年 / 6卷 / 1-4期
基金：
日本学术振兴会;
关键词：
carbon nanotubes; lattice defects; recursive Green's function technique; Landauer's formula; mesoscopic system;
D O I：
10.1016/S1386-9477(99)00227-1
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Conductance of carbon nanotubes (CNs) with a pair of impurities having a huge and short-range potential is studied within a tight-binding model. When a pair occupies different sublattices, the conductance is given by 2e(2)/pi h same as in ideal CNs for a small distance and approaches either e(2)/pi h or 0 with the increase of the distance depending on types of their sites. When a pair occupies same sublattice points, the conductance is either e(2)/pi h or 0 independent of the distance. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码：872 / 875
页数：4
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