Creation and detection of spin-polarized current using quantum point contact with spin-orbit interaction

Hiroto Yokouchi, Mikio Eto

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

We have proposed that quantum point contacts (QPCs) can be a useful tool for producing spin-polarized currents in the presence of Rashba spin-orbit (SO) interaction [J. Phys. Soc. Jpn. 74, 1934 (2005)]. No magnetic field is required. When the conductance through a QPC is quantized in units of 2e2/h, the current is spin-polarized in the transverse direction. This spin polarization, which can be larger than 50% in InGaAs heterostructures, is elucidated using the S-matrix formalism. We also examine transport properties of a QPC connected to a ferromagnetic lead and show how to detect the spin-polarized current from the QPC.

本文言語English
ページ(範囲)557-559
ページ数3
ジャーナルPhysica Status Solidi (C) Current Topics in Solid State Physics
4
2
DOI
出版ステータスPublished - 2007 12 1
イベントInternational Conference on Superlattices, Nano-structures and Nano-devices, ICSNN-2006 - Istanbul, Turkey
継続期間: 2006 7 302006 8 4

ASJC Scopus subject areas

  • 凝縮系物理学

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