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Cubic magnetocrystalline anisotropy-driven spin reorientation in TmIG detected by spin Hall magnetoresistance |
| Qinghui Yu(余庆汇)1, Xue He(贺雪)1, Yongli Yu(于永利)1, Xiuqiao Liu(刘修桥)1, Shilei Ding(丁石磊)2,†, and Rui Wu(吴锐)1,‡ |
1 Spin-X Institute, School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices, and Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 511442, China;
2 School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore |
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Abstract The precise manipulation and detection of magnetization in magnetic insulators are essential for the development of next-generation spintronic devices. Here, using a heterostructure consisting of a heavy metal and a magnetic garnet thin film, i.e., (111)-oriented Pt/Tm3Fe5O12 (TmIG), we reconstruct the three-dimensional magnetization reversal trajectory using spin Hall magnetoresistance (SMR). It is found that the SMR signal of the heterostructure exhibits abrupt jumps when the magnetic field is scanned along the out-of-plane direction, and this anomalous phenomenon persists at temperatures below 100 K. By employing a three-dimensional Stoner-Wohlfarth model, we demonstrate that this behavior originates from a discontinuous magnetization trajectory with a unique 3m symmetry, which is governed by the competition among the cubic magnetocrystalline anisotropy, magnetoelastic anisotropy, and the Zeeman energy. These results provide a novel strategy for detecting three-dimensional magnetization orientation in magnetic insulators and hold the potential to advance the development of low-energy-consumption spintronic devices.
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Received: 06 March 2026
Revised: 31 March 2026
Accepted manuscript online: 01 April 2026
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PACS:
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72.25.-b
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(Spin polarized transport)
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75.30.Gw
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(Magnetic anisotropy)
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75.60.Jk
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(Magnetization reversal mechanisms)
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75.50.Gg
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(Ferrimagnetics)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12374108), the Guangdong Provincial Quantum Science Strategic Initiative (Grant No. GDZX2401002), and the GJYC program of Guangzhou (Grant No. 2024D01J0087). S.D. acknowledges support from the START-UP GRANT from Nanyang Technological University. |
Cite this article:
Qinghui Yu(余庆汇), Xue He(贺雪), Yongli Yu(于永利), Xiuqiao Liu(刘修桥), Shilei Ding(丁石磊), and Rui Wu(吴锐) Cubic magnetocrystalline anisotropy-driven spin reorientation in TmIG detected by spin Hall magnetoresistance 2026 Chin. Phys. B 35 087202
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