Vicinal substrate induced field-free spin–orbit torque switching and tunability of the Dzyaloshinskii–Moriya interaction in the CoPt layer
Spin–orbit torque (SOT)-induced magnetization switching is a key ingredient for electrically controlled spintronic devices. Crystal engineering offers an effective approach to tailor and optimize SOT efficiency. In this work, we demonstrate that a controllable anisotropic crystal distortion can be introduced by growing CoPt films on vicinal substrates, which enables full-range, field-free SOT switching of the CoPt layer. Moreover, the strength of the Dzyaloshinskii–Moriya interaction (DMI) can also be tuned by adjusting the substrate vicinality. With its simple structure, full-range switching capability, and tunable DMI, our findings are beneficial for the design of next-generation spintronic devices.
Authors
- Yizheng Wu (ORCID: https://orcid.org/0000-0002-9289-1271)
- Dong Shi (ORCID: https://orcid.org/0000-0001-7528-662X)
- Renchao Che (ORCID: https://orcid.org/0000-0002-6583-7114)
- Ke Pei (ORCID: https://orcid.org/0000-0002-2476-8861)
- Yongming Luo (ORCID: https://orcid.org/0000-0002-2201-3051)
- Chendi Yang
- Hao Chen (ORCID: https://orcid.org/0009-0001-6480-7976)
- Wei Xing (ORCID: https://orcid.org/0000-0002-4173-6220)
- Lu Sun (ORCID: https://orcid.org/0000-0003-1354-5731)
- Mengfan Liang (ORCID: https://orcid.org/0009-0006-4169-9294)
- Nan Jiang (ORCID: https://orcid.org/0009-0002-5794-956X)
Institutions
- Donghua University (CN)
- Fudan University (CN)
- ShanghaiTech University (CN)
- Collaborative Innovation Center of Chemistry for Energy Materials (CN)
- Hangzhou Dianzi University (CN)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-11-03
- DOI
- https://doi.org/10.1063/5.0290116
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 0.00