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arXiv · 1102.4648

Evidence of Spin-Filtering in Quantum Constrictions with Spin-Orbit Interaction

Sunwoo Kim·Yoshiaki Hashimoto·Yasuhiro Iye·Shingo Katsumoto
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Abstract

A new type of blockade effect - spin-orbit blockade (SOB) - is found in the conduction of a quantum dot (QD) made of a material with spin-orbit interaction. The blockade arises from spin-filtering effect in a quantum point contact (QPC), which is a component of the QD. Hence the appearance of the blockade itself evidences the spin-filtering effect in the QPC. The lower bound of filtering efficiency is estimated to be above 80%.

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Sunwoo Kim, Yoshiaki Hashimoto, Yasuhiro Iye, Shingo Katsumoto. 2011-02-23. Evidence of Spin-Filtering in Quantum Constrictions with Spin-Orbit Interaction. https://doi.org/10.1143/jpsj.81.054706

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