Non-altermagnetic spin texture in MnTe
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arXiv
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| Natura: | Preprint |
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2025
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| _version_ | 1866909886886969344 |
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| author | Zeng, Meng Liu, Pengfei Zhu, Ming-Yuan Zheng, Naifu Liu, Xiang-Rui Zhu, Yu-Peng Shao, Tian-Hao Hao, Yu-Jie Ma, Xiao-Ming Qu, Gexing Kurleto, Rafał Wutke, Dawid Luo, Rong-Hao Dai, Yue Zhang, Xiaoqian Miyamoto, Koji Shimada, Kenya Okuda, Taichi Tanaka, Kiyohisa Huang, Yaobo Liu, Qihang Liu, Chang |
| author_facet | Zeng, Meng Liu, Pengfei Zhu, Ming-Yuan Zheng, Naifu Liu, Xiang-Rui Zhu, Yu-Peng Shao, Tian-Hao Hao, Yu-Jie Ma, Xiao-Ming Qu, Gexing Kurleto, Rafał Wutke, Dawid Luo, Rong-Hao Dai, Yue Zhang, Xiaoqian Miyamoto, Koji Shimada, Kenya Okuda, Taichi Tanaka, Kiyohisa Huang, Yaobo Liu, Qihang Liu, Chang |
| contents | Recently, altermagnets have emerged as promising candidates in spintronics, uniquely combining large spin-polarized electronic states with zero net magnetization. A prominent example is $α$-MnTe, whose altermagnetic spin splitting, i.e., the degeneracy lift in momentum space induced by collinear magnetic order, has been experimentally observed. However, the direct evidence of its $g$-wave spin polarization, the key property for altermagnetic spintronics, is thus far lacking. By combining high-resolution spin- and angle-resolved photoemission spectroscopy (SARPES) with first-principles calculations, we reveal a $k_z$-independent, Rashba-like spin texture in $α$-MnTe. Our results indicate that the observed spin polarization is primarily governed by spin-orbit coupling, whereas the magnetic order contributes to the splitting of energy bands but plays a much less dominant role in spin polarization due to the multi-domain nature. From this result, we further establish a way to prescreen altermagnet candidates that favor the formation of large antiferromagnetic domains based on symmetry analysis. Our work elucidates the interplay between magnetic order and spin-orbit coupling in governing spin polarization in altermagnet candidates, and thereby advances the materials design paradigm for spin-functional devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_02447 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Non-altermagnetic spin texture in MnTe Zeng, Meng Liu, Pengfei Zhu, Ming-Yuan Zheng, Naifu Liu, Xiang-Rui Zhu, Yu-Peng Shao, Tian-Hao Hao, Yu-Jie Ma, Xiao-Ming Qu, Gexing Kurleto, Rafał Wutke, Dawid Luo, Rong-Hao Dai, Yue Zhang, Xiaoqian Miyamoto, Koji Shimada, Kenya Okuda, Taichi Tanaka, Kiyohisa Huang, Yaobo Liu, Qihang Liu, Chang Materials Science Recently, altermagnets have emerged as promising candidates in spintronics, uniquely combining large spin-polarized electronic states with zero net magnetization. A prominent example is $α$-MnTe, whose altermagnetic spin splitting, i.e., the degeneracy lift in momentum space induced by collinear magnetic order, has been experimentally observed. However, the direct evidence of its $g$-wave spin polarization, the key property for altermagnetic spintronics, is thus far lacking. By combining high-resolution spin- and angle-resolved photoemission spectroscopy (SARPES) with first-principles calculations, we reveal a $k_z$-independent, Rashba-like spin texture in $α$-MnTe. Our results indicate that the observed spin polarization is primarily governed by spin-orbit coupling, whereas the magnetic order contributes to the splitting of energy bands but plays a much less dominant role in spin polarization due to the multi-domain nature. From this result, we further establish a way to prescreen altermagnet candidates that favor the formation of large antiferromagnetic domains based on symmetry analysis. Our work elucidates the interplay between magnetic order and spin-orbit coupling in governing spin polarization in altermagnet candidates, and thereby advances the materials design paradigm for spin-functional devices. |
| title | Non-altermagnetic spin texture in MnTe |
| topic | Materials Science |
| url | https://arxiv.org/abs/2511.02447 |