Spin-filtering Effect in Graphene with Double Magnetic Barrier Structures

被引：4
|
作者：
Myoung, Nojoon [1 ]
Ihm, Gukhyung [1 ]
机构：
[1] Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 59卷 / 03期
关键词：
Graphene; Spin transport; Magnetic barrier; TRANSPORT; NANORIBBONS;
D O I：
10.3938/jkps.59.2275
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate spin transport in graphene with a particular profile of magnetic vector potential, the double magnetic barrier structure. The results are characterized by sharp resonant tunneling peaks in the transmission. These peaks could be spin-split under certain conditions, resulting in considerable spin-polarization in the conductance. By applying electrostatic modulation, in addition to the double barrier structures, we could change the sign of the spin polarization and observe tunable spin transport.
引用
收藏
页码：2275 / 2279
页数：5
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