Spin polarized quantum pump effect in zigzag graphene nanoribbons

被引：12
|
作者：
Grichuk, E. S. [1 ]
Manykin, E. A. [1 ,2 ]
机构：
[1] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia
[2] Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia
来源：
JETP LETTERS | 2011年 / 93卷 / 07期
基金：
俄罗斯基础研究基金会;
关键词：
TRANSPORT-PROPERTIES; TRANSMISSION;
D O I：
10.1134/S0021364011070058
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The spin polarized adiabatic quantum pump effect in zigzag graphene nanoribbons has been numerically analyzed. Since the ground state of such a ribbon is antiferromagnetic (the opposite spin electrons are located on the opposite edges of the ribbon), the spin currents can be generated in this system with the help of the quantum pump effect when symmetry between the opposite spin states is broken. Two methods of this breaking by means of defects at the ribbon edge and the transverse electric field have been proposed. It has been shown that the generation of not only the electron and spin currents, but also the purely spin current is possible in both cases.
引用
收藏
页码：372 / 376
页数：5
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