| Autor: |
Nasr, Federica, Binda, Federico, Lambert, Charles-Henri, Sala, Giacomo, Noël, Paul, Gambardella, Pietro |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Appl. Phys. Lett. 123, 262403 (2023) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/5.0178878 |
| Popis: |
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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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