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 language | English |
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Article number | 052402 |
Journal | Applied Physics Letters |
Volume | 115 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2019 Jul 29 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)