Spin filtering in single magnetic barrier structures revisited

被引：46

作者：

Zhai, F ^{[1
]}

Xu, HQ ^{[1
]}

机构：

[1] Lund Univ, Div Solid State Phys, S-22100 Lund, Sweden

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 03期

关键词：

D O I：

10.1063/1.2166204

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We reexamine spin-dependent transport properties of two-dimensional electrons modulated by the stray field of a ferromagnetic metal (FM) stripe on top. When the magnetization is along the transport direction of the electrons, the FM stripe generates not only a magnetic barrier but also an in-plane magnetic field component. Previous studies have omitted the in-plane magnetic field component and shown that such a device does not possess any spin-filtering effect. We show that with inclusion of this in-plane magnetic field component, a spin polarization of nearly 100% can be achieved in such a single FM-stripe modulated two-dimensional electron gas device. (c) 2006 American Institute of Physics.

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页码：1 / 3

页数：3

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