Quantum transport of two-dimensional electron gas through finite lateral magnetic superlattice

被引：10
|
作者：
Mu, YM
Fu, Y
Willander, M
机构：
[1] CHALMERS UNIV TECHNOL, S-41296 GOTHENBURG, SWEDEN
[2] ACAD SINICA, SHANGHAI INST TECH PHYS, NATL LAB INFRARED PHYS, SHANGHAI 200083, PEOPLES R CHINA
来源：
SUPERLATTICES AND MICROSTRUCTURES | 1997年 / 22卷 / 02期
关键词：
tunneling; magnetic barrier; J-V characteristic; inhomogeneous magnetic field;
D O I：
10.1006/spmi.1996.0154
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have investigated the quantum transport properties of electrons through multiple-magnetic-barrier structures, where the magnetic barriers are created by depositing ferromagnetic stripes on top of a heterostructure. The transmission coefficient and current-density-voltage (J-V) characteristic are calculated. It is shown that the quantum transport is anisotropic and depends on the transmission direction of the incoming electron. An external electric field strengthens the anisotropy of the transmission. The J-V characteristic exhibits negative conductivities similar to a multiple-electric-barrier structure. (C) 1997 Academic Press Limited.
引用
收藏
页码：135 / 142
页数：8
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