Tunneling of Dirac fermions through magnetic barriers in graphene

被引：30
|
作者：
Myoung, Nojoon [1 ]
Ihm, G. [1 ]
机构：
[1] Chungman Natl Univ, Dept Phys, Taejon 305764, South Korea
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2009年 / 42卷 / 01期
关键词：
Graphene; Magnetic barrier; Dirac fermion; KLEIN PARADOX;
D O I：
10.1016/j.physe.2009.09.001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We have studied the tunneling of Dirac fermions through magnetic barriers in graphene. Magnetic barriers are produced via delta function-like inhomogeneous magnetic fields in which Dirac fermions in graphene experience the tunneling barrier in the real sense in contrast to Klein paradox caused by electrostatic barriers. The transmission through the magnetic barriers as functions of incident energy and angle of incoming fermions shows characteristic oscillations associated with tunneling resonances. We have also found the confined states in the magnetic barrier region which turn out to correspond to the total internal reflection in the usual optics. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：70 / 72
页数：3
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