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https://doi.org/10.1038/s41467-018-08274-8
Title: | Electric-field control of spin accumulation direction for spin-orbit torques | Authors: | Mishra, R Mahfouzi, F Kumar, D Cai, K Chen, M Qiu, X Kioussis, N Yang, H |
Keywords: | ferromagnetic material heavy metal oxygen acceleration Article chemistry electric field torque |
Issue Date: | 2019 | Publisher: | Nature Publishing Group | Citation: | Mishra, R, Mahfouzi, F, Kumar, D, Cai, K, Chen, M, Qiu, X, Kioussis, N, Yang, H (2019). Electric-field control of spin accumulation direction for spin-orbit torques. Nature Communications 10 (1) : 248. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-018-08274-8 | Abstract: | Electric field is an energy-efficient tool that can be leveraged to control spin–orbit torques (SOTs). Although the amount of current-induced spin accumulation in a heavy metal (HM)/ferromagnet (FM) heterostructure can be regulated to a certain degree using an electric field in various materials, the control of its direction has remained elusive so far. Here, we report that both the direction and amount of current-induced spin accumulation at the HM/FM interface can be dynamically controlled using an electric field in an oxide capped SOT device. The applied electric field transports oxygen ions and modulates the HM/FM interfacial chemistry resulting in an interplay between the spin Hall and the interfacial torques which in turn facilitates a non-volatile and reversible control over the direction and magnitude of SOTs. Our electric-field controlled spin-orbitronics device can be programmed to behave either like the SOT systems with a positive spin Hall angle or a negative spin Hall angle. © 2019, The Author(s). | Source Title: | Nature Communications | URI: | https://scholarbank.nus.edu.sg/handle/10635/174184 | ISSN: | 20411723 | DOI: | 10.1038/s41467-018-08274-8 |
Appears in Collections: | Elements Staff Publications |
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