Interplay between altermagnetic order and crystal symmetry probed using magnetotransport in epitaxial altermagnet MnTe
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913849019465728 |
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| author | Bangar, Himanshu Tsipas, Polychronis Rout, Prasanna Pandey, Lalit Kalaboukhov, Alexei Lintzeris, Akylas Dimoulas, Athanasios Dash, Saroj P. |
| author_facet | Bangar, Himanshu Tsipas, Polychronis Rout, Prasanna Pandey, Lalit Kalaboukhov, Alexei Lintzeris, Akylas Dimoulas, Athanasios Dash, Saroj P. |
| contents | Altermagnets are a new class of magnetic materials characterized by fully compensated spins arranged in alternating local structures, allowing for spin-split bands similar to those found in ferromagnets without net magnetism. Recently, MnTe has emerged as a prototypical altermagnetic material exhibiting spin-polarized electronic bands and anomalous transport phenomena. Although recent work has explored the magnetic and structural properties of MnTe, detailed experimental investigations into the relationship between altermagnetic order and crystal symmetry are lacking. Here, we report the relationship between altermagnetic order and crystal symmetry by investigating magnetotransport properties of MnTe epitaxial altermagnetic thin films grown by molecular beam epitaxy. We observe a spontaneous anomalous Hall effect and show the control of Hall response with the altermagnetic order using the magnetic field and the crystallographic angle dependence. Detailed measurements establish that both the longitudinal and transverse electronic responses depend on the relative orientation of the applied current and Néel vector as well as on the crystal orientation and altermagnetic order. These results provide new insights into the interplay between crystal symmetry and altermagnetism for future device applications. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2505_14589 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Interplay between altermagnetic order and crystal symmetry probed using magnetotransport in epitaxial altermagnet MnTe Bangar, Himanshu Tsipas, Polychronis Rout, Prasanna Pandey, Lalit Kalaboukhov, Alexei Lintzeris, Akylas Dimoulas, Athanasios Dash, Saroj P. Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons Applied Physics Altermagnets are a new class of magnetic materials characterized by fully compensated spins arranged in alternating local structures, allowing for spin-split bands similar to those found in ferromagnets without net magnetism. Recently, MnTe has emerged as a prototypical altermagnetic material exhibiting spin-polarized electronic bands and anomalous transport phenomena. Although recent work has explored the magnetic and structural properties of MnTe, detailed experimental investigations into the relationship between altermagnetic order and crystal symmetry are lacking. Here, we report the relationship between altermagnetic order and crystal symmetry by investigating magnetotransport properties of MnTe epitaxial altermagnetic thin films grown by molecular beam epitaxy. We observe a spontaneous anomalous Hall effect and show the control of Hall response with the altermagnetic order using the magnetic field and the crystallographic angle dependence. Detailed measurements establish that both the longitudinal and transverse electronic responses depend on the relative orientation of the applied current and Néel vector as well as on the crystal orientation and altermagnetic order. These results provide new insights into the interplay between crystal symmetry and altermagnetism for future device applications. |
| title | Interplay between altermagnetic order and crystal symmetry probed using magnetotransport in epitaxial altermagnet MnTe |
| topic | Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons Applied Physics |
| url | https://arxiv.org/abs/2505.14589 |