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

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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 languageEnglish (US)
Article number093714
JournalJournal of Applied Physics
Volume105
Issue number9
DOIs
StatePublished - Jun 22 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Jacob, J., Meier, G., Peters, S., Matsuyama, T., Merkt, U., Cummings, A. W., Akis, R., & Ferry, D. K. (2009). Generation of highly spin-polarized currents in cascaded InAs spin filters. Journal of Applied Physics, 105(9), [093714]. https://doi.org/10.1063/1.3124359