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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
2020-10-04 04:22:46
@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},
}