Magnetoresistance effect in a graphene modulated by magnetic-electrical barriers

被引：5
作者：
Lu, Jian-Duo [1 ]
Xu, Bin [2 ]
Li, Yun-Bao [1 ]
Liu, Hong-Yu [1 ]
Li, Ling [1 ]
Zheng, Wei [3 ]
机构：
[1] Wuhan Univ Sci & Technol, Hubei Prov Key Lab Syst Sci Met Proc, Wuhan 430081, Peoples R China
[2] North China Inst Water Conservancy & Hydroelect P, Dept Math & Informat Sci, Zhengzhou 450011, Peoples R China
[3] Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan 430077, Peoples R China
来源：
VACUUM | 2013年 / 96卷
基金：
中国国家自然科学基金;
关键词：
Graphene; Dirac equation; Magnetoresistance effect; NANOSTRUCTURE; TRANSPORT;
D O I：
10.1016/j.vacuum.2013.03.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We theoretically investigate the magnetoresistance (MR) effect in a monolayer graphene modulated by both magnetic and electrical barriers, which can be experimentally realized by depositing two parallel metallic ferromagnetic tripes under an applied voltage on the top and bottom of a graphene. The tremendous MR can be found due to the significant difference between the transmissions through the parallel and antiparallel magnetization configurations, and the MR ratio strongly depends on the strength of the magnetic field and the height of the electric barrier. Therefore, we can control the MR effect by changing either of the two magnetic fields or the electric barrier to make a MR device based on a graphene. (c) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：22 / 26
页数：5
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