Spin frustration and unconventional spin twisting state in van der Waals ferromagnet/antiferromagnet heterostructures
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913692144107520 |
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| author | Wang, Tianye Li, Qian Yang, Mengmeng Sun, Yu N'Diaye, Alpha T. Klewe, Christoph Scholl, Andreas Chen, Xianzhe Huang, Xiaoxi Zhang, Hongrui Yang, Santai Zhang, Xixiang Hwang, Chanyong Shafer, Padraic C. Crommie, Michael F. Ramesh, Ramamoorthy Qiu, Zi Q. |
| author_facet | Wang, Tianye Li, Qian Yang, Mengmeng Sun, Yu N'Diaye, Alpha T. Klewe, Christoph Scholl, Andreas Chen, Xianzhe Huang, Xiaoxi Zhang, Hongrui Yang, Santai Zhang, Xixiang Hwang, Chanyong Shafer, Padraic C. Crommie, Michael F. Ramesh, Ramamoorthy Qiu, Zi Q. |
| contents | Atomically flat surfaces of van der Waals (vdW) materials pave an avenue for addressing a long-standing fundamental issue of how a perfectly compensated antiferromagnet (AFM) surface frustrates a ferromagnetic (FM) overlayer in FM/AFM heterostructures. By revealing the AFM and FM spin structures separately in vdW Fe5GeTe2/NiPS3 heterostructures, we find that C-type in-plane AFM NiPS3 develops three equivalent AFM domains which are robust against external magnetic field and magnetic coupling with Fe5GeTe2. Consequently, spin frustration at the Fe5GeTe2/NiPS3 interface was shown to develop a perpendicular Fe5GeTe2 magnetization in the interfacial region that switches separately from the bulk of the Fe5GeTe2 magnetizations. In particular, we discover an unconventional spin twisting state that the Fe5GeTe2 spins twist from perpendicular direction near the interface to in-plane direction away from the interface in Fe5GeTe2/NiPS3. Our finding of the twisting spin texture is a unique property of spin frustration in van der Waals magnetic heterostructures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_16702 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin frustration and unconventional spin twisting state in van der Waals ferromagnet/antiferromagnet heterostructures Wang, Tianye Li, Qian Yang, Mengmeng Sun, Yu N'Diaye, Alpha T. Klewe, Christoph Scholl, Andreas Chen, Xianzhe Huang, Xiaoxi Zhang, Hongrui Yang, Santai Zhang, Xixiang Hwang, Chanyong Shafer, Padraic C. Crommie, Michael F. Ramesh, Ramamoorthy Qiu, Zi Q. Materials Science Mesoscale and Nanoscale Physics Atomically flat surfaces of van der Waals (vdW) materials pave an avenue for addressing a long-standing fundamental issue of how a perfectly compensated antiferromagnet (AFM) surface frustrates a ferromagnetic (FM) overlayer in FM/AFM heterostructures. By revealing the AFM and FM spin structures separately in vdW Fe5GeTe2/NiPS3 heterostructures, we find that C-type in-plane AFM NiPS3 develops three equivalent AFM domains which are robust against external magnetic field and magnetic coupling with Fe5GeTe2. Consequently, spin frustration at the Fe5GeTe2/NiPS3 interface was shown to develop a perpendicular Fe5GeTe2 magnetization in the interfacial region that switches separately from the bulk of the Fe5GeTe2 magnetizations. In particular, we discover an unconventional spin twisting state that the Fe5GeTe2 spins twist from perpendicular direction near the interface to in-plane direction away from the interface in Fe5GeTe2/NiPS3. Our finding of the twisting spin texture is a unique property of spin frustration in van der Waals magnetic heterostructures. |
| title | Spin frustration and unconventional spin twisting state in van der Waals ferromagnet/antiferromagnet heterostructures |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2501.16702 |