Generation of highly spin-polarized currents in cascaded InAs spin filters
作者： Jan Jacob , Guido Meier , Sebastian Peters , Toru Matsuyama , Ulrich Merkt
DOI: 10.1063/1.3124359
关键词: Ballistic conduction 、 Quantum spin liquid 、 Molecular physics 、 Quantum point contact 、 Spin Hall effect 、 Quantum spin Hall effect 、 Spin-½ 、 Quantum Hall effect 、 Spin polarization 、 Condensed matter physics 、 Physics
摘要: 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 first filter to generate two oppositely currents. From conductance asymmetry at outputs second high polarizations are determined all-electrical measurements. experiments good agreement with ballistic quantum simulations, which mimic double-Y-shaped structure constricted by quantum-point contacts.
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