Spin-polarized transport in a two-dimensional electron gas with interdigital-ferromagnetic contacts

C. M. Hu; Junsaku Nitta; A. Jensen; J. B. Hansen; Hideaki Takayanagi

doi:10.1103/PhysRevB.63.125333

Spin-polarized transport in a two-dimensional electron gas with interdigital-ferromagnetic contacts

C. M. Hu, Junsaku Nitta, A. Jensen, J. B. Hansen, Hideaki Takayanagi

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	63
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.63.125333
Publication status	Published - 2001 Mar 13
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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AU - Hu, C. M.

AU - Nitta, Junsaku

AU - Jensen, A.

AU - Hansen, J. B.

AU - Takayanagi, Hideaki

PY - 2001/3/13

Y1 - 2001/3/13

N2 - Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.

AB - Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.

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Spin-polarized transport in a two-dimensional electron gas with interdigital-ferromagnetic contacts

Abstract

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