Bibliographic Details
| Title: |
Spin-orbit torques and magnetization switching in Gd/Fe multilayers generated by current injection in NiCu alloys |
| Authors: |
Nasr, Federica, Binda, Federico, Lambert, Charles-Henri, Sala, Giacomo, Noël, Paul, Gambardella, Pietro |
| Source: |
Appl. Phys. Lett. 123, 262403 (2023) |
| Publication Year: |
2023 |
| Collection: |
Condensed Matter
Physics (Other) |
| Subject Terms: |
Condensed Matter - Materials Science, Physics - Applied Physics |
| More Details: |
Light transition metals have recently emerged as a sustainable material class for efficient spin-charge interconversion. We report measurements of current-induced spin-orbit torques generated by Ni$_{1-x}$Cu$_{x}$ alloys in perpendicularly magnetized ferrimagnetic Gd/Fe multilayers. We show that the spin-orbit torque efficiency of Ni$_{1-x}$Cu$_{x}$ increases with the Ni/Cu atomic ratio, reaching values comparable to those of Pt for Ni$_{55}$Cu$_{45}$. Furthermore, we demonstrate magnetization switching of a 20-nm-thick Gd/Fe multilayer with a threshold current that decreases with increasing Ni concentration, similar to the spin-orbit torque efficiency. Our findings show that Ni$_{1-x}$Cu$_{x}$$-$based magnetic heterostructures allow for efficient control of the magnetization by electric currents. |
| Document Type: |
Working Paper |
| DOI: |
10.1063/5.0178878 |
| Access URL: |
http://arxiv.org/abs/2312.17652 |
| Accession Number: |
edsarx.2312.17652 |
| Database: |
arXiv |
