Theory of inverse Rashba-Edelstein effect induced by spin pumping into a two-dimensional electron gas

M. Yama, M. Matsuo, T. Kato

Published 2023-05-23Version 1

We theoretically consider the inverse Rashba-Edelstein effect (IREE) induced by spin pumping from a ferromagnetic insulator (FI) into a two-dimensional electron gas (2DEG) in which the Rashba and Dresselhaus spin-orbit interactions coexist. We clarify that the magnetization and current in the 2DEG generated by the IREE depend on the resonant frequency of the ferromagnetic resonance (FMR) and azimuth angle of the spontaneous spin polarization of the FI. We further show that the magnetization and current increase substantially as the ratio of magnitudes of Rashba and Dresselhaus spin-orbit interactions approaches unity.