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Spin filtering in single magnetic barrier structures revisited

Zhai, Feng LU and Xu, Hongqi LU (2006) In Applied Physics Letters 88(3).
Abstract
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.
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
88
issue
3
article number
032502
publisher
American Institute of Physics (AIP)
external identifiers
  • wos:000234757100039
  • scopus:31144471623
ISSN
0003-6951
DOI
10.1063/1.2166204
language
English
LU publication?
yes
id
f127cc84-5a26-4376-a4c8-dd4af367b782 (old id 419973)
date added to LUP
2016-04-01 11:37:04
date last changed
2022-03-28 00:36:47
@article{f127cc84-5a26-4376-a4c8-dd4af367b782,
  abstract     = {{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.}},
  author       = {{Zhai, Feng and Xu, Hongqi}},
  issn         = {{0003-6951}},
  language     = {{eng}},
  number       = {{3}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Applied Physics Letters}},
  title        = {{Spin filtering in single magnetic barrier structures revisited}},
  url          = {{http://dx.doi.org/10.1063/1.2166204}},
  doi          = {{10.1063/1.2166204}},
  volume       = {{88}},
  year         = {{2006}},
}