Observation of High-Order Anisotropic Magnetoresistance in a Cubic Ferromagnet
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866909975450746880 |
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| author | Chen, Haoran Chen, Yue Feng, Yizi Guo, Ruda Fan, Yuanfei Xu, Hongyue Wu, Tong Guo, Zhongxun Yue, Di Jin, Xiaofeng Liu, Yi Yuan, Zhe Wu, Yizheng |
| author_facet | Chen, Haoran Chen, Yue Feng, Yizi Guo, Ruda Fan, Yuanfei Xu, Hongyue Wu, Tong Guo, Zhongxun Yue, Di Jin, Xiaofeng Liu, Yi Yuan, Zhe Wu, Yizheng |
| contents | High-order anisotropic magnetoresistance (AMR) is observed up to the 18th harmonic in cubic Fe(001) thin films, overturning the long-standing paradigm that only two- and four-fold terms are symmetry-allowed. Using angle-resolved transport and Fourier analysis, we show that six-fold and higher-order terms are intrinsic, tunable by temperature and thickness, and predicted by crystal symmetry. Microscopically, the two-fold sign reversal arises from a crossover between weak and strong scattering regimes, while high-order terms emerge from the interplay of anisotropic Fermi velocity and relaxation time. Our results establish high-order AMR as a symmetry-prescribed property of cubic ferromagnets, providing critical benchmarks for spin-orbit transport theory and enabling new angular-sensitive spintronic functionalities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_21224 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of High-Order Anisotropic Magnetoresistance in a Cubic Ferromagnet Chen, Haoran Chen, Yue Feng, Yizi Guo, Ruda Fan, Yuanfei Xu, Hongyue Wu, Tong Guo, Zhongxun Yue, Di Jin, Xiaofeng Liu, Yi Yuan, Zhe Wu, Yizheng Other Condensed Matter High-order anisotropic magnetoresistance (AMR) is observed up to the 18th harmonic in cubic Fe(001) thin films, overturning the long-standing paradigm that only two- and four-fold terms are symmetry-allowed. Using angle-resolved transport and Fourier analysis, we show that six-fold and higher-order terms are intrinsic, tunable by temperature and thickness, and predicted by crystal symmetry. Microscopically, the two-fold sign reversal arises from a crossover between weak and strong scattering regimes, while high-order terms emerge from the interplay of anisotropic Fermi velocity and relaxation time. Our results establish high-order AMR as a symmetry-prescribed property of cubic ferromagnets, providing critical benchmarks for spin-orbit transport theory and enabling new angular-sensitive spintronic functionalities. |
| title | Observation of High-Order Anisotropic Magnetoresistance in a Cubic Ferromagnet |
| topic | Other Condensed Matter |
| url | https://arxiv.org/abs/2512.21224 |