Goldstone-mediated polar instability in hexagonal barium titanate
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917349084364800 |
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| author | Simpson, S. Dey, U. Sjökvist, R. J. Wright, J. Ritter, C. Beanland, R. Bristowe, N. C. Senn, M. S. |
| author_facet | Simpson, S. Dey, U. Sjökvist, R. J. Wright, J. Ritter, C. Beanland, R. Bristowe, N. C. Senn, M. S. |
| contents | We discover a rare structural manifestation of the Goldstone paradigm in a hexagonal polytype of the archetypal ferroelectric BaTiO3. First-principles calculations confirm the Goldstone character of the order parameter, and high-resolution diffraction measurements link this to a quasi-continuous domain texture in the vicinity of the low-temperature phase transitions. Our findings highlight how changes in structural topology may be exploited to realize rich polar topologies in bulk ferroelectric perovskites. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_16228 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Goldstone-mediated polar instability in hexagonal barium titanate Simpson, S. Dey, U. Sjökvist, R. J. Wright, J. Ritter, C. Beanland, R. Bristowe, N. C. Senn, M. S. Materials Science We discover a rare structural manifestation of the Goldstone paradigm in a hexagonal polytype of the archetypal ferroelectric BaTiO3. First-principles calculations confirm the Goldstone character of the order parameter, and high-resolution diffraction measurements link this to a quasi-continuous domain texture in the vicinity of the low-temperature phase transitions. Our findings highlight how changes in structural topology may be exploited to realize rich polar topologies in bulk ferroelectric perovskites. |
| title | Goldstone-mediated polar instability in hexagonal barium titanate |
| topic | Materials Science |
| url | https://arxiv.org/abs/2503.16228 |