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5 October 2023 Orbital torque in ferromagnetic metal/Cu/oxide thin films
Junyeon Kim, YoshiChika Otani
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Proceedings Volume PC12656, Spintronics XVI; PC126561R (2023) https://doi.org/10.1117/12.2678281
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
Recent experimental and theoretical studies have revealed that orbital transport could provide an alternative mechanism for efficient spin manipulation in the form of orbital torque. This study presents experimental studies on charge-to-orbital conversion and orbital torque in CoFe/Cu/Oxide heterostructures. In these systems, the charge-to-orbital conversion mainly occurs at the Cu/Oxide interface via the orbital Rashba-Edelstein effect. Although we observe sizeable orbital torque in all structures, the torque efficiency varies more than twice depending on the Oxide. Moreover, the torque efficiency can be changed by annealing and/or oxygen incorporation by a maximum of three times.
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Junyeon Kim and YoshiChika Otani "Orbital torque in ferromagnetic metal/Cu/oxide thin films", Proc. SPIE PC12656, Spintronics XVI, PC126561R (5 October 2023); https://doi.org/10.1117/12.2678281
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KEYWORDS
Ferromagnetics
Thin films
Annealing
Heterojunctions
Interfaces
Materials properties
Oxides
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