Observation of the antiferromagnetic spin Hall effect
- 25 February 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Materials
- Vol. 20 (6), 800-804
- https://doi.org/10.1038/s41563-021-00946-z
Abstract
The discovery of the spin Hall effect1 enabled the efficient generation and manipulation of the spin current. More recently, the magnetic spin Hall effect2,3 was observed in non-collinear antiferromagnets, where the spin conservation is broken due to the non-collinear spin configuration. This provides a unique opportunity to control the spin current and relevant device performance with controllable magnetization. Here, we report a magnetic spin Hall effect in a collinear antiferromagnet, Mn2Au. The spin currents are generated at two spin sublattices with broken spatial symmetry, and the antiparallel antiferromagnetic moments play an important role. Therefore, we term this effect the ‘antiferromagnetic spin Hall effect’. The out-of-plane spins from the antiferromagnetic spin Hall effect are favourable for the efficient switching of perpendicular magnetized devices, which is required for high-density applications. The antiferromagnetic spin Hall effect adds another twist to the atomic-level control of spin currents via the antiferromagnetic spin structure.Keywords
Funding Information
- National Natural Science Foundation of China (51871130)
- Natural Science Foundation of Beijing Municipality (JQ20010)
This publication has 30 references indexed in Scilit:
- Controlling spin current polarization through non-collinear antiferromagnetismNature Communications, 2020
- Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systemsReviews of Modern Physics, 2019
- Electric field control of Néel spin–orbit torque in an antiferromagnetNature Materials, 2019
- Magnetic and magnetic inverse spin Hall effects in a non-collinear antiferromagnetNature, 2019
- Spin currents and spin–orbit torques in ferromagnetic trilayersNature Materials, 2018
- Antiferromagnetic spintronicsNature Nanotechnology, 2016
- An antidamping spin–orbit torque originating from the Berry curvatureNature Nanotechnology, 2014
- Spin-Torque Switching with the Giant Spin Hall Effect of TantalumScience, 2012
- Perpendicular switching of a single ferromagnetic layer induced by in-plane current injectionNature, 2011
- Observation of the Spin Hall Effect in SemiconductorsScience, 2004