Room temperature spin transport in undoped (110) GaAs/AlGaAs quantum wells

Nobuhide Yokota, Yohei Aoshima, Kazuhiro Ikeda, Hitoshi Kawaguchi

研究成果: Article査読

9 被引用数 (Scopus)

抄録

We are reporting on our first observation of a micrometer-order electron spin transport in a (110) GaAs/AlGaAs multiple quantum well (QW) at room temperature using a space- and time-resolved Kerr rotation technique. A 37-μm transport was observed within an electron spin lifetime of 1.2 ns at room temperature when using an in-plane electric field of 1.75 kV/cm. The spatio-temporal profiles of electron spins were well reproduced by the spin drift-diffusion equations coupled with the Poisson equation, supporting the validity of the measurement. The results suggest that (110) QWs are useful as a spin transport layer for semiconductor spintronic devices operating at room temperature.

本文言語English
論文番号072406
ジャーナルApplied Physics Letters
104
7
DOI
出版ステータスPublished - 2014 2月 17
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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