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Observation of spin-orbit effects with spin rotation symmetry

Published

Author(s)

Alisha Humphries, Tao Wang, Eric R. Edwards, Shane Allen, Justin Shaw, Hans Nembach, John Xiao, Thomas J. Silva

Abstract

The spin-orbit interaction in a nonmagnetic/magnetic multilayer has been intensively studied due to its efficient conversion between a spin current and a charge current. In the spin Hall/Rashba-Edelstein effects (SHE/REE) and inverse spin Hall/Rashba-Edelstein effects (ISHE/IREE), the charge current, spin current and spin directions are orthogonal to each other in the nonmagnetic material. Here we report the generation of the spin-orbit torque (SOT) and ISHE/IREE voltage in unconventional directions by replacing the nonmagnetic material with a magnetic metal. In a spin valve-like multilayer with orthogonal magnetization configurations, we observe SOTs on the in-plane magnetized layer in the direction that is rotated 90� from the conventional SOTs around the out-of-plane magnetization of the other magnetic layer. We further measure the ISHE/IREE generated by an out-of-plane temperature gradient in the same sample and observe the ISHE/IREE voltage with a similar rotated symmetry. These findings present interesting spin-orbit effects in magnetic multilayers and may have potential impact in the application of magnetic random-access memories.
Citation
Nature Communications
Volume
8
Issue
1

Citation

Humphries, A. , Wang, T. , Edwards, E. , Allen, S. , Shaw, J. , Nembach, H. , Xiao, J. and Silva, T. (2017), Observation of spin-orbit effects with spin rotation symmetry, Nature Communications, [online], https://doi.org/10.1038/s41467-017-00967-w (Accessed April 17, 2024)
Created October 12, 2017, Updated October 12, 2021