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

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number052402
JournalApplied Physics Letters
Volume115
Issue number5
DOIs
Publication statusPublished - 2019 Jul 29

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Simultaneous evaluation of drift- and diffusion-induced spin-orbit fields in a (001) GaAs/AlGaAs two-dimensional electron gas'. Together they form a unique fingerprint.

Cite this