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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.13415 |
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| _version_ | 1866913847076454400 |
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| author | Haag, Luca Weber, Marius Leckron, Kai Šmejkal, Libor Sinova, Jairo Schneider, Hans Christian |
| author_facet | Haag, Luca Weber, Marius Leckron, Kai Šmejkal, Libor Sinova, Jairo Schneider, Hans Christian |
| contents | In planar altermagnets, optical excitation by linearly polarized ultrashort pulses can induce spin polarizations in the electronic excited states in a controlled fashion, even though the material is magnetically compensated. Here, we theoretically analyze the response of the prototypical bulk g-wave altermagnet $α$-MnTe to polarized ultrashort pulses. By calculating the excited electron distributions based on ab-initio band structure data, we show how this excited electronic spin response in $α$-MnTe exhibits different symmetries which are determined by the nodal planes intrinsic to the bulk g-wave altermagnet. We present a simple procedure to obtain the symmetry of the electronic spin response from the two-dimensional cuts through the three-dimensional band structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_13415 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optical signatures of bulk g-wave altermagnetism in MnTe Haag, Luca Weber, Marius Leckron, Kai Šmejkal, Libor Sinova, Jairo Schneider, Hans Christian Materials Science In planar altermagnets, optical excitation by linearly polarized ultrashort pulses can induce spin polarizations in the electronic excited states in a controlled fashion, even though the material is magnetically compensated. Here, we theoretically analyze the response of the prototypical bulk g-wave altermagnet $α$-MnTe to polarized ultrashort pulses. By calculating the excited electron distributions based on ab-initio band structure data, we show how this excited electronic spin response in $α$-MnTe exhibits different symmetries which are determined by the nodal planes intrinsic to the bulk g-wave altermagnet. We present a simple procedure to obtain the symmetry of the electronic spin response from the two-dimensional cuts through the three-dimensional band structure. |
| title | Optical signatures of bulk g-wave altermagnetism in MnTe |
| topic | Materials Science |
| url | https://arxiv.org/abs/2505.13415 |