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.
ASJC Scopus subject areas
- General Physics and Astronomy