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Continuous modulation of charge-spin conversion by electric field in Pt/Co2FeSi/Pb(Mg1/3Nb2/3)O3-Pb0.7Ti0.3O3 heterostructures |
| Yibing Zhao(赵逸冰)1,2,†, Xiaoxiao Fang(方晓筱)1,2,†, Zhirui Wang(王志睿)1,2, Miao Cheng(程淼)1,2, Yongjia Tan(谭永嘉)1,2, Dongxiong Wei(韦东雄)1,2, Changjun Jiang(蒋长军)1,2, and Jinli Yao(幺金丽)1,2,‡ |
1 Key Laboratory for Magnetism and Magnetic Materials(Ministry of Education), Lanzhou University, Lanzhou 730000, China;
2 Key Laboratory of Special Function Materials and Structure Design(Ministry of Education), Lanzhou University, Lanzhou 730000, China |
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Abstract The half-metallic Heusler alloy Co$_{2}$FeSi is an ideal material in spintronic devices due to its higher spin polarization, higher Curie temperature and lower damping parameters. In this work, the dynamic magnetism of Co$_{2}$FeSi is modulated by electric field and it is demonstrated that the charge-spin conversion efficiency $\xi $ is continuous and controllable by the electric field. We further find an extremely high $\xi $ in ferromagnetic/ferroelectric (FM/FE) heterostructures, which could be ascribed to interfacial effect in FM/FE interface. Moreover, we investigate that the charge-spin conversion efficiency varies with the electric field in a butterfly-like behavior, which accords with the $S$-$E$ curve of Pb(Mg$_{1/3}$Nb$_{2/3})$O$_{3}$-Pb$_{0.7}$Ti$_{0.3}$O$_{3}$(PMN-PT) and could be attributed to strain effect. The modulation of charge-spin conversion efficiency in FM/FE heterostructures via electric field presents a profound potential for next-generation spintronic devices and applications of current-induced magnetization switching.
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Received: 24 July 2022
Revised: 12 January 2023
Accepted manuscript online: 13 January 2023
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PACS:
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67.30.er
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(Magnetic properties, NMR)
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67.80.dk
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(Magnetic properties, phases, and NMR)
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75.50.-y
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(Studies of specific magnetic materials)
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75.70.-i
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(Magnetic properties of thin films, surfaces, and interfaces)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11974149) and the Natural Science Foundation of Gansu Province (Grant No. 21JR7RA472). |
Corresponding Authors:
Jinli Yao
E-mail: yaojl@lzu.edu.cn
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Cite this article:
Yibing Zhao(赵逸冰), Xiaoxiao Fang(方晓筱), Zhirui Wang(王志睿), Miao Cheng(程淼), Yongjia Tan(谭永嘉), Dongxiong Wei(韦东雄), Changjun Jiang(蒋长军), and Jinli Yao(幺金丽) Continuous modulation of charge-spin conversion by electric field in Pt/Co2FeSi/Pb(Mg1/3Nb2/3)O3-Pb0.7Ti0.3O3 heterostructures 2023 Chin. Phys. B 32 056701
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