Spin injection across a hybrid heterojunction: Theoretical understanding and experimental approach (invited)

C.M. Hu; J. Nitta; Ane Jensen; Jørn Bindslev Hansen; H. Takayanagi; T. Matsuyama; D. Heitmann; U. Merkt

doi:10.1063/1.1447282

Spin injection across a hybrid heterojunction: Theoretical understanding and experimental approach (invited)

C.M. Hu, J. Nitta, Ane Jensen, Jørn Bindslev Hansen, H. Takayanagi, T. Matsuyama, D. Heitmann, U. Merkt

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Abstract

Spin injection across a hybrid ferromagnet/semiconductor junction has proven to be difficult, unlike in an all-metal junction used in giant magnetoresistance devices. The difference responsible is highlighted in a simple model. We perform spin-injection-detection experiments on devices with two ferromagnetic contacts on a two-dimensional electron gas confined in an InAs quantum well. We demonstrate that spin injection allows the hybrid device to combine both the advantage of the ferromagnet as well as that of the semiconductor.

Original language	English
Journal	Journal of Applied Physics
Volume	91
Issue number	10
Pages (from-to)	7251-7255
ISSN	0021-8979
DOIs	https://doi.org/10.1063/1.1447282
Publication status	Published - 2002

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Copyright (2002) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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abstract = "Spin injection across a hybrid ferromagnet/semiconductor junction has proven to be difficult, unlike in an all-metal junction used in giant magnetoresistance devices. The difference responsible is highlighted in a simple model. We perform spin-injection-detection experiments on devices with two ferromagnetic contacts on a two-dimensional electron gas confined in an InAs quantum well. We demonstrate that spin injection allows the hybrid device to combine both the advantage of the ferromagnet as well as that of the semiconductor.",

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AU - Hu, C.M.

AU - Nitta, J.

AU - Jensen, Ane

AU - Hansen, Jørn Bindslev

AU - Takayanagi, H.

AU - Matsuyama, T.

AU - Heitmann, D.

AU - Merkt, U.

N1 - Copyright (2002) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

PY - 2002

Y1 - 2002

N2 - Spin injection across a hybrid ferromagnet/semiconductor junction has proven to be difficult, unlike in an all-metal junction used in giant magnetoresistance devices. The difference responsible is highlighted in a simple model. We perform spin-injection-detection experiments on devices with two ferromagnetic contacts on a two-dimensional electron gas confined in an InAs quantum well. We demonstrate that spin injection allows the hybrid device to combine both the advantage of the ferromagnet as well as that of the semiconductor.

AB - Spin injection across a hybrid ferromagnet/semiconductor junction has proven to be difficult, unlike in an all-metal junction used in giant magnetoresistance devices. The difference responsible is highlighted in a simple model. We perform spin-injection-detection experiments on devices with two ferromagnetic contacts on a two-dimensional electron gas confined in an InAs quantum well. We demonstrate that spin injection allows the hybrid device to combine both the advantage of the ferromagnet as well as that of the semiconductor.

U2 - 10.1063/1.1447282

DO - 10.1063/1.1447282

M3 - Journal article

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VL - 91

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EP - 7255

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 10

ER -

Spin injection across a hybrid heterojunction: Theoretical understanding and experimental approach (invited)

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