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4 October 2022 Magnetic proximity effect, unidirectional spin hall magnetoresistance, and spin-orbit torques in heavy metal/Co/heavy metal trilayer systems (Conference Presentation)
Anastasiia Moskaltsova, Timo Kuschel
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Proceedings Volume PC12205, Spintronics XV; PC122050S (2022) https://doi.org/10.1117/12.2633274
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
We investigated the magnetic proximity effect (MPE) as well as the unidirectional spin Hall magnetoresistance (USMR) and spin-orbit torques (SOTs) in heavy metal/Co/heavy metal trilayer systems compared to Pt/Co and Ta/Co bilayers. By using x-ray resonant magnetic reflectivity, we obtained magnetic depth profiles of the structural, optical and magnetic parameters, and studied the impact of the MPE in Pt on the total magnetic moment of the systems. A detailed analysis of harmonic longitudinal and Hall voltage measurements revealed enhanced SOTs and USMR in the trilayers that include a second heavy metal with the opposite sign of the spin Hall angle.
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Anastasiia Moskaltsova and Timo Kuschel "Magnetic proximity effect, unidirectional spin hall magnetoresistance, and spin-orbit torques in heavy metal/Co/heavy metal trilayer systems (Conference Presentation)", Proc. SPIE PC12205, Spintronics XV, PC122050S (4 October 2022); https://doi.org/10.1117/12.2633274
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KEYWORDS
Magnetism
Metals
Platinum
Anisotropy
Ferromagnetics
Reflectivity
Tantalum
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