Metallic d-wave altermagnetism in WFeB: a platform for electrically switchable perpendicular spin-splitter response
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866915904354254848 |
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| author | Gamage, Eranga H. Zhang, Zhen Pradhan, Subhadip Kumar, Ajay Ramgern, David R. Garlea, V. Ovidiu Mudryk, Yaroslav Kamali, Saeed Warnberg, Douglas Belashchenko, Kirill D. Antropov, Vladimir Kovnir, Kirill |
| author_facet | Gamage, Eranga H. Zhang, Zhen Pradhan, Subhadip Kumar, Ajay Ramgern, David R. Garlea, V. Ovidiu Mudryk, Yaroslav Kamali, Saeed Warnberg, Douglas Belashchenko, Kirill D. Antropov, Vladimir Kovnir, Kirill |
| contents | We report the synthesis and magnetic characterization of WFeB and identify it as a metallic d-wave altermagnet representative of a broader TiNiSi-type family. Neutron diffraction, Mössbauer spectroscopy, and magnetometry establish a collinear altermagnetic ordering confirmed by first-principles calculations. The electronic structure shows a nonrelativistic spin splitting of approximately 100 meV, but it also supports a strong spin-splitter transport response. This demonstrates that efficient spin-current generation can occur even with such modest band splitting. Symmetry analysis shows that selected film orientations permit deterministic switching of the Néel vector by current-induced staggered torques, enabling electrical control of a perpendicular spin-splitter response. These results establish WFeB and related TiNiSi-type antiferromagnets as a platform for electrically switchable charge-to-spin conversion driven by altermagnetic symmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_00325 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Metallic d-wave altermagnetism in WFeB: a platform for electrically switchable perpendicular spin-splitter response Gamage, Eranga H. Zhang, Zhen Pradhan, Subhadip Kumar, Ajay Ramgern, David R. Garlea, V. Ovidiu Mudryk, Yaroslav Kamali, Saeed Warnberg, Douglas Belashchenko, Kirill D. Antropov, Vladimir Kovnir, Kirill Materials Science We report the synthesis and magnetic characterization of WFeB and identify it as a metallic d-wave altermagnet representative of a broader TiNiSi-type family. Neutron diffraction, Mössbauer spectroscopy, and magnetometry establish a collinear altermagnetic ordering confirmed by first-principles calculations. The electronic structure shows a nonrelativistic spin splitting of approximately 100 meV, but it also supports a strong spin-splitter transport response. This demonstrates that efficient spin-current generation can occur even with such modest band splitting. Symmetry analysis shows that selected film orientations permit deterministic switching of the Néel vector by current-induced staggered torques, enabling electrical control of a perpendicular spin-splitter response. These results establish WFeB and related TiNiSi-type antiferromagnets as a platform for electrically switchable charge-to-spin conversion driven by altermagnetic symmetry. |
| title | Metallic d-wave altermagnetism in WFeB: a platform for electrically switchable perpendicular spin-splitter response |
| topic | Materials Science |
| url | https://arxiv.org/abs/2604.00325 |