Journal
PHYSICAL REVIEW APPLIED
Volume 11, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.11.044070
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Funding
- National Science Foundation [ECCS-1808826]
- WESTERN DIGITAL TECHNOLOGIES, INC.
- National Science Foundation through the MRSEC shared facilities [DMR 14-19807]
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We report the observation of antiferromagnetic insulator-mediated spin-orbit-torque switching in Pt/NiO/Co1-xTbx heterostructures. By measuring the current-induced shift in the magnetic hysteresis loops and the second-harmonic anomalous Hall resistance, we quantitatively determine the spin-orbit-torque efficiency in Pt/NiO/Co1-xTbx samples with different NiO thicknesses, uncovering a systematic evolution of the magnetic switching behavior. The measured spin-orbit-torque efficiency is enhanced in the low NiO thickness regime (1-2 nm), highlighting the efficient spin manipulation across a disordered antiferromagnetic insulator.
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