Simultaneous evaluation of drift- and diffusion-induced spin-orbit fields in a (001) GaAs/AlGaAs two-dimensional electron gas

Takahito Saito, Asuka Aoki, Junsaku Nitta, Makoto Kohda

研究成果: ジャーナルへの寄稿学術論文査読

7 被引用数 (Scopus)

抄録

We experimentally investigate spatiotemporal dynamics of an electron spin ensemble in the coexistence of drift and diffusive spin motion in a (001) GaAs/AlGaAs two-dimensional electron gas. Electron spins simultaneously experience spin-orbit effective magnetic fields induced by each transport mechanism, resulting in the modulation of spin precession frequency. By employing scanning time-resolved Kerr rotation microscopy, we evaluate both drift and diffusion induced spin-orbit fields simultaneously from the spatiotemporal spin map. Based on the evaluated Rashba and Dresselhaus spin-orbit coefficients, we clarify the difference and the accuracy of the evaluated spin-orbit coefficients in each transport mechanism.

本文言語英語
論文番号052402
ジャーナルApplied Physics Letters
115
5
DOI
出版ステータス出版済み - 2019 7月 29

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