Symmetry Analysis of Magnetoelectric Coupling Effect in All Point Groups
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915760921640960 |
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| author | Tu, Xinhai Wang, Di Zhou, Hanjing Yan, Songsong Liu, Huimei Xiang, Hongjun Wan, Xiangang |
| author_facet | Tu, Xinhai Wang, Di Zhou, Hanjing Yan, Songsong Liu, Huimei Xiang, Hongjun Wan, Xiangang |
| contents | Symmetry analysis provides crucial insights into the magnetoelectric coupling effect in type-II multiferroics. In this Letter, we comprehensively investigate couplings between electric polarization and inhomogeneous magnetization across all 32 crystallographic point groups using a phenomenological Landau theory. Our theory successfully explains the ferroelectric polarizations in all known type-II multiferroics characterized by incommensurate magnetic orders. In addition, we predict 12 promising type-II multiferroic candidates with the highest magnetic transition temperature of 84 K through systematic screening of MAGNDATA database. Furthermore, we find that the collinear spin-sinusoidal texture emerges as a previously unrecognized source of ferroelectric polarization. We also demonstrate that topological ferroelectric vortex states can be induced by ferromagnetic vortex configurations in uniaxial point groups, opening a route to realizing coexisting multiple-vortex states in multiferroics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_06648 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Symmetry Analysis of Magnetoelectric Coupling Effect in All Point Groups Tu, Xinhai Wang, Di Zhou, Hanjing Yan, Songsong Liu, Huimei Xiang, Hongjun Wan, Xiangang Materials Science Symmetry analysis provides crucial insights into the magnetoelectric coupling effect in type-II multiferroics. In this Letter, we comprehensively investigate couplings between electric polarization and inhomogeneous magnetization across all 32 crystallographic point groups using a phenomenological Landau theory. Our theory successfully explains the ferroelectric polarizations in all known type-II multiferroics characterized by incommensurate magnetic orders. In addition, we predict 12 promising type-II multiferroic candidates with the highest magnetic transition temperature of 84 K through systematic screening of MAGNDATA database. Furthermore, we find that the collinear spin-sinusoidal texture emerges as a previously unrecognized source of ferroelectric polarization. We also demonstrate that topological ferroelectric vortex states can be induced by ferromagnetic vortex configurations in uniaxial point groups, opening a route to realizing coexisting multiple-vortex states in multiferroics. |
| title | Symmetry Analysis of Magnetoelectric Coupling Effect in All Point Groups |
| topic | Materials Science |
| url | https://arxiv.org/abs/2507.06648 |