Spin-dependent transport induced by magnetization in zigzag graphene nanoribbons coupled to one-dimensional leads

被引：0
|
作者：
赵华 [1 ]
张小伟 [1 ]
蔡托 [1 ]
桑田 [1 ]
刘晓春 [1 ]
刘芳 [1 ]
机构：
[1] Department of Physics and Electronics,Qiannan Normal College for Nationalities
来源：
Chinese Physics B | 2012年 / 01期
基金：
中国国家自然科学基金;
关键词：
graphene nanoribbon; giant magnetoresistance; conductance; current-voltage characteristic;
D O I：
暂无
中图分类号：
TB383.1 [];
学科分类号：
070205 ; 080501 ; 1406 ;
摘要：
We study spin transport in a zigzag graphene nanoribbon sample with two ferromagnetic strips deposited on the two sides of the ribbon.A tight-binding Hamiltonian was adopted to describe the sample connected to two onedimensional leads.Our theoretical study shows that the resonance peaks of conductance for the spin-up and spin-down electrons are separated for the parallel configuration of the ferromagnetic strips,while they are not separated for the case of antiparallel configuration.This means that giant magnetoresistance can be produced at particular energies by altering the configurations of the ferromagnetic strips,and the device can be designed as a spin filter.
引用
收藏
页码：458 / 461
页数：4
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