Does a magnetic barrier or a magnetic-electric barrier structure possess any spin polarization and spin filtering under zero bias?

被引：122
|
作者：
Xu, HZ [1 ]
Okada, Y [1 ]
机构：
[1] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan
来源：
APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 19期
关键词：
D O I：
10.1063/1.1416167
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this letter, we have clarified that there is no spin polarization and spin filtering in a magnetic barrier structure as well as in a magnetic-electric barrier structure using our explicit expressions for electron transmission probability. Our results are found to be contradictory to those of A. Majumdar [Phys. Rev. B 54, 11911 (1996)] and G. Papp and F. M. Peeters [Appl. Phys. Lett. 78, 2184 (2001)]. We have shown the significant spin polarization and spin filtering observed by these authors were caused by a mistake in their transmission probability. (C) 2001 American Institute of Physics.
引用
收藏
页码：3119 / 3121
页数：3
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