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 languageEnglish
JournalJournal of Applied Physics
Volume91
Issue number10
Pages (from-to)7251-7255
ISSN0021-8979
DOIs
Publication statusPublished - 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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