Regensburg 2022 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 24: Spin Transport and Orbitronics, Spin-Hall Effects
MA 24.6: Vortrag
Mittwoch, 7. September 2022, 16:15–16:30, H37
Spin and orbital Edelstein effects in a bilayer system with Rashba interaction — •Sergio Leiva1, Ingrid Mertig1, and Annika Johansson2 — 1Martin Luther University Halle-Wittenberg, Institute of Physics, 06099 Halle, Germany — 2Max Planck Institute of Microstructure Physics, Halle, Germany
The spin Edelstein effect has proved to be a promising phenomenon to generate spin polarization from a charge current in systems without inversion symmetry. In recent years, current-induced orbital magnetization, also called the orbital Edelstein effect, has also been predicted for various systems with broken inversion symmetry [1-7].
In the present work, we calculate the current-induced spin and orbital magnetization for a bilayer system with Rashba interaction, using Boltzmann transport theory with a constant relaxation time. We compare the magnitudes of the spin and orbital Edelstein effects and find that their dependencies on model parameters such as effective mass, spin-orbit coupling, or energy, differ qualitatively, and they can even exhibit opposite signs.
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[7] A. Johansson et al., Phys. Rev. Research, 3, 013275 (2021).