Generation of highly spin-polarized currents in cascaded InAs spin filters

Jan Jacob; Guido Meier; Sebastian Peters; Toru Matsuyama; Ulrich Merkt; Aron W. Cummings; Richard Akis; David K. Ferry

doi:10.1063/1.3124359

Generation of highly spin-polarized currents in cascaded InAs spin filters

Jan Jacob, Guido Meier, Sebastian Peters, Toru Matsuyama, Ulrich Merkt, Aron W. Cummings, Richard Akis, David K. Ferry

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

8 Scopus citations

Abstract

We report the generation of highly spin-polarized currents and their detection in cascaded InAs spin filters via transport measurements below 300 mK. The intrinsic spin-Hall effect is used in the first filter to generate two oppositely spin-polarized currents. From the conductance asymmetry at the outputs of the second filter high spin polarizations are determined in all-electrical measurements. The experiments are in good agreement with ballistic quantum transport simulations, which mimic the double-Y-shaped structure constricted by quantum-point contacts.

Original language	English (US)
Article number	093714
Journal	Journal of Applied Physics
Volume	105
Issue number	9
DOIs	https://doi.org/10.1063/1.3124359
State	Published - 2009

ASJC Scopus subject areas

General Physics and Astronomy

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@article{3414169d3d2d4266b61fe3c1a4e45dea,

title = "Generation of highly spin-polarized currents in cascaded InAs spin filters",

abstract = "We report the generation of highly spin-polarized currents and their detection in cascaded InAs spin filters via transport measurements below 300 mK. The intrinsic spin-Hall effect is used in the first filter to generate two oppositely spin-polarized currents. From the conductance asymmetry at the outputs of the second filter high spin polarizations are determined in all-electrical measurements. The experiments are in good agreement with ballistic quantum transport simulations, which mimic the double-Y-shaped structure constricted by quantum-point contacts.",

author = "Jan Jacob and Guido Meier and Sebastian Peters and Toru Matsuyama and Ulrich Merkt and Cummings, {Aron W.} and Richard Akis and Ferry, {David K.}",

note = "Funding Information: We thank Christian Heyn for MBE growth of the InAs heterostructures. Financial support from the Deutsche Forschungsgemeinschaft via the SFB 508 and the GK 1286 is gratefully acknowledged. A.W.C. acknowledges the support of the DOE Computational Science Graduate Fellowship, Grant No. DE-FG02-97ER25308. ",

year = "2009",

doi = "10.1063/1.3124359",

language = "English (US)",

volume = "105",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

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TY - JOUR

T1 - Generation of highly spin-polarized currents in cascaded InAs spin filters

AU - Jacob, Jan

AU - Meier, Guido

AU - Peters, Sebastian

AU - Matsuyama, Toru

AU - Merkt, Ulrich

AU - Cummings, Aron W.

AU - Akis, Richard

AU - Ferry, David K.

N1 - Funding Information: We thank Christian Heyn for MBE growth of the InAs heterostructures. Financial support from the Deutsche Forschungsgemeinschaft via the SFB 508 and the GK 1286 is gratefully acknowledged. A.W.C. acknowledges the support of the DOE Computational Science Graduate Fellowship, Grant No. DE-FG02-97ER25308.

PY - 2009

Y1 - 2009

N2 - We report the generation of highly spin-polarized currents and their detection in cascaded InAs spin filters via transport measurements below 300 mK. The intrinsic spin-Hall effect is used in the first filter to generate two oppositely spin-polarized currents. From the conductance asymmetry at the outputs of the second filter high spin polarizations are determined in all-electrical measurements. The experiments are in good agreement with ballistic quantum transport simulations, which mimic the double-Y-shaped structure constricted by quantum-point contacts.

AB - We report the generation of highly spin-polarized currents and their detection in cascaded InAs spin filters via transport measurements below 300 mK. The intrinsic spin-Hall effect is used in the first filter to generate two oppositely spin-polarized currents. From the conductance asymmetry at the outputs of the second filter high spin polarizations are determined in all-electrical measurements. The experiments are in good agreement with ballistic quantum transport simulations, which mimic the double-Y-shaped structure constricted by quantum-point contacts.

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DO - 10.1063/1.3124359

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

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ER -

Generation of highly spin-polarized currents in cascaded InAs spin filters

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