Spin injection from the Heusler alloy Co2 MnGe into Al0.1 Ga0.9 AsGaAs heterostructures

X. Y. Dong; C. Adelmann; J. Q. Xie; C. J. Palmstrøm; X. Lou; J. Strand; P. A. Crowell; J. P. Barnes; A. K. Petford-Long

doi:10.1063/1.1881789

Spin injection from the Heusler alloy Co2 MnGe into Al0.1 Ga0.9 AsGaAs heterostructures

X. Y. Dong
, C. Adelmann
, J. Q. Xie
, C. J. Palmstrøm
, X. Lou
, J. Strand
, P. A. Crowell
, J. P. Barnes
, A. K. Petford-Long

Physics and Astronomy (Twin Cities)

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

162 Scopus citations

Abstract

Electrical spin injection from the Heusler alloy Co2 MnGe into a p-i-n Al0.1 Ga0.9 AsGaAs light emitting diode is demonstrated. A maximum steady-state spin polarization of approximately 13% at 2 K is measured in two types of heterostructures. The injected spin polarization at 2 K is calculated to be 27% based on a calibration of the spin detector using Hanle effect measurements. Although the dependence on electrical bias conditions is qualitatively similar to Fe-based spin injection devices of the same design, the spin polarization injected from Co2 MnGe decays more rapidly with increasing temperature.

Original language	English (US)
Article number	102107
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	10
DOIs	https://doi.org/10.1063/1.1881789
State	Published - Mar 7 2005

Bibliographical note

Funding Information:
This work was supported in part by the DARPA SPINS program, ONR, and the University of Minnesota MRSEC (NSF DMR-0212032).

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10.1063/1.1881789

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title = "Spin injection from the Heusler alloy Co2 MnGe into Al0.1 Ga0.9 AsGaAs heterostructures",

abstract = "Electrical spin injection from the Heusler alloy Co2 MnGe into a p-i-n Al0.1 Ga0.9 AsGaAs light emitting diode is demonstrated. A maximum steady-state spin polarization of approximately 13\% at 2 K is measured in two types of heterostructures. The injected spin polarization at 2 K is calculated to be 27\% based on a calibration of the spin detector using Hanle effect measurements. Although the dependence on electrical bias conditions is qualitatively similar to Fe-based spin injection devices of the same design, the spin polarization injected from Co2 MnGe decays more rapidly with increasing temperature.",

author = "Dong, \{X. Y.\} and C. Adelmann and Xie, \{J. Q.\} and Palmstr{\o}m, \{C. J.\} and X. Lou and J. Strand and Crowell, \{P. A.\} and Barnes, \{J. P.\} and Petford-Long, \{A. K.\}",

note = "Funding Information: This work was supported in part by the DARPA SPINS program, ONR, and the University of Minnesota MRSEC (NSF DMR-0212032).",

year = "2005",

month = mar,

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doi = "10.1063/1.1881789",

language = "English (US)",

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T1 - Spin injection from the Heusler alloy Co2 MnGe into Al0.1 Ga0.9 AsGaAs heterostructures

AU - Dong, X. Y.

AU - Adelmann, C.

AU - Xie, J. Q.

AU - Palmstrøm, C. J.

AU - Lou, X.

AU - Strand, J.

AU - Crowell, P. A.

AU - Barnes, J. P.

AU - Petford-Long, A. K.

N1 - Funding Information: This work was supported in part by the DARPA SPINS program, ONR, and the University of Minnesota MRSEC (NSF DMR-0212032).

PY - 2005/3/7

Y1 - 2005/3/7

N2 - Electrical spin injection from the Heusler alloy Co2 MnGe into a p-i-n Al0.1 Ga0.9 AsGaAs light emitting diode is demonstrated. A maximum steady-state spin polarization of approximately 13% at 2 K is measured in two types of heterostructures. The injected spin polarization at 2 K is calculated to be 27% based on a calibration of the spin detector using Hanle effect measurements. Although the dependence on electrical bias conditions is qualitatively similar to Fe-based spin injection devices of the same design, the spin polarization injected from Co2 MnGe decays more rapidly with increasing temperature.

AB - Electrical spin injection from the Heusler alloy Co2 MnGe into a p-i-n Al0.1 Ga0.9 AsGaAs light emitting diode is demonstrated. A maximum steady-state spin polarization of approximately 13% at 2 K is measured in two types of heterostructures. The injected spin polarization at 2 K is calculated to be 27% based on a calibration of the spin detector using Hanle effect measurements. Although the dependence on electrical bias conditions is qualitatively similar to Fe-based spin injection devices of the same design, the spin polarization injected from Co2 MnGe decays more rapidly with increasing temperature.

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 10

M1 - 102107

ER -

Spin injection from the Heusler alloy Co2 MnGe into Al0.1 Ga0.9 AsGaAs heterostructures

Abstract

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