Spin injection into a two-dimensional electron gas using inter-digital-ferromagnetic contacts

C. M. Hu; J. Nitta; A. Jensen; J. B. Hansen; H. Takayanagi; T. Matsuyama; D. Grundler; G. Meier; D. Heitmann; U. Merkt

doi:10.1016/S1386-9477(01)00293-4

Spin injection into a two-dimensional electron gas using inter-digital-ferromagnetic contacts

C. M. Hu, J. Nitta, A. Jensen, J. B. Hansen, H. Takayanagi, T. Matsuyama, D. Grundler, G. Meier, D. Heitmann, U. Merkt

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

We present a model that describes the spin injection across a single interface with two electrodes. The spin-injection rate across a typical hybrid junction made of ferromagnet (FM) and a two-dimensional electron gas (2DEG) is found at the percentage level. We perform spin-injection-detection experiment on devices with two ferromagnetic contacts on a 2DEG confined in an InAs quantum well. A spin-injection rate of 4.5% is estimated from the measured magnetoresistance.

Original language	English
Pages (from-to)	395-398
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	12
Issue number	1-4
DOIs	https://doi.org/10.1016/S1386-9477(01)00293-4
Publication status	Published - 2002 Jan
Externally published	Yes
Event	14th International Conference on the - Prague, Czech Republic Duration: 2001 Jul 30 → 2001 Aug 3

Keywords

Ferromagnet/semiconductor hybrid junction
Magnetoresistance
Spin injection

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(01)00293-4

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Spin injection into a two-dimensional electron gas using inter-digital-ferromagnetic contacts. / Hu, C. M.; Nitta, J.; Jensen, A.; Hansen, J. B.; Takayanagi, H.; Matsuyama, T.; Grundler, D.; Meier, G.; Heitmann, D.; Merkt, U.

In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 12, No. 1-4, 01.2002, p. 395-398.

Research output: Contribution to journal › Conference article › peer-review

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title = "Spin injection into a two-dimensional electron gas using inter-digital-ferromagnetic contacts",

abstract = "We present a model that describes the spin injection across a single interface with two electrodes. The spin-injection rate across a typical hybrid junction made of ferromagnet (FM) and a two-dimensional electron gas (2DEG) is found at the percentage level. We perform spin-injection-detection experiment on devices with two ferromagnetic contacts on a 2DEG confined in an InAs quantum well. A spin-injection rate of 4.5% is estimated from the measured magnetoresistance.",

keywords = "Ferromagnet/semiconductor hybrid junction, Magnetoresistance, Spin injection",

author = "Hu, {C. M.} and J. Nitta and A. Jensen and Hansen, {J. B.} and H. Takayanagi and T. Matsuyama and D. Grundler and G. Meier and D. Heitmann and U. Merkt",

note = "Funding Information: We thank M. Johnson, P. St{\v r}eda, G. Bastian, U. R{\"o}ssler and M. Roukes for valuable discussions. This work is financially supported by the NEDO International Joint Research Grant, the BMBF through project 01BM905 and the DFG through SFB 508. JBH thanks the European Commission for a grant.; 14th International Conference on the ; Conference date: 30-07-2001 Through 03-08-2001",

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doi = "10.1016/S1386-9477(01)00293-4",

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TY - JOUR

T1 - Spin injection into a two-dimensional electron gas using inter-digital-ferromagnetic contacts

AU - Hu, C. M.

AU - Nitta, J.

AU - Jensen, A.

AU - Hansen, J. B.

AU - Takayanagi, H.

AU - Matsuyama, T.

AU - Grundler, D.

AU - Meier, G.

AU - Heitmann, D.

AU - Merkt, U.

N1 - Funding Information: We thank M. Johnson, P. Středa, G. Bastian, U. Rössler and M. Roukes for valuable discussions. This work is financially supported by the NEDO International Joint Research Grant, the BMBF through project 01BM905 and the DFG through SFB 508. JBH thanks the European Commission for a grant.

PY - 2002/1

Y1 - 2002/1

N2 - We present a model that describes the spin injection across a single interface with two electrodes. The spin-injection rate across a typical hybrid junction made of ferromagnet (FM) and a two-dimensional electron gas (2DEG) is found at the percentage level. We perform spin-injection-detection experiment on devices with two ferromagnetic contacts on a 2DEG confined in an InAs quantum well. A spin-injection rate of 4.5% is estimated from the measured magnetoresistance.

AB - We present a model that describes the spin injection across a single interface with two electrodes. The spin-injection rate across a typical hybrid junction made of ferromagnet (FM) and a two-dimensional electron gas (2DEG) is found at the percentage level. We perform spin-injection-detection experiment on devices with two ferromagnetic contacts on a 2DEG confined in an InAs quantum well. A spin-injection rate of 4.5% is estimated from the measured magnetoresistance.

KW - Ferromagnet/semiconductor hybrid junction

KW - Magnetoresistance

KW - Spin injection

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U2 - 10.1016/S1386-9477(01)00293-4

DO - 10.1016/S1386-9477(01)00293-4

M3 - Conference article

AN - SCOPUS:0035239586

VL - 12

SP - 395

EP - 398

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

SN - 1386-9477

IS - 1-4

T2 - 14th International Conference on the

Y2 - 30 July 2001 through 3 August 2001

ER -

Spin injection into a two-dimensional electron gas using inter-digital-ferromagnetic contacts

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Keywords

ASJC Scopus subject areas

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