Spin-polarized transport in carbon nanotubes with impurities

被引：0
|
作者：
H. Pan
T. H. Lin
D. Yu
机构：
[1] Beijing University of Aeronautics and Astronautics,Department of Physics
[2] State Key Laboratory for Mesoscopic Physics and Department of Physics,undefined
[3] Peking University,undefined
来源：
The European Physical Journal B - Condensed Matter and Complex Systems | 2005年 / 47卷
关键词：
Spectroscopy; Neural Network; State Physics; Carbon Nanotubes; Complex System;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Impurity effects on the spin-polarized transport through armchair carbon nanotubes contacted by ferromagnetic leads are investigated theoretically. The length of the nanotube can cause on-resonance and off-resonance behaviors of the spin-coherent transport. The impurity suppresses the conductance for the on-resonance case, while it enhances the conductance for the off-resonance one. With increasing impurity strength, the tunnel magnetoresistance exhibits a maximum or minimum value for the on-resonance or off-resonance case, respectively.
引用
收藏
页码：437 / 441
页数：4
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