Carbon nanotube based magnetic tunnel junctions

被引：155
|
作者：
Mehrez, H [1 ]
Taylor, J
Guo, H
Wang, J
Roland, C
机构：
[1] McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada
[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
[3] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[4] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.84.2682
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Spin-coherent quantum transport in carbon nanotube magnetic tunnel junctions is investigated theoretically. A spin-valve effect is found for metallic, armchair tubes, with a magnetoconductance ratio ranging up to 20%. Because of the finite length of the nanotube junctions, transport is dominated by resonant transmission. The magnetic tunnel junctions are found to have distinctly different transport behavior depending on whether or not the length of the tubes is commensurate with a 3N + 1 rule, with N the number of basic carbon repeat units along the nanotube length.
引用
收藏
页码：2682 / 2685
页数：4
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