Chiral soft mode transition driven by strain in ferroelectric bubble domains
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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_ | 1866909858472656896 |
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| author | Dey, Urmimala Fedorova, Natalya S. Íñiguez-González, Jorge Aramberri, Hugo |
| author_facet | Dey, Urmimala Fedorova, Natalya S. Íñiguez-González, Jorge Aramberri, Hugo |
| contents | Chirality in solids is attracting growing attention as a potential ferroic order, yet virtually no paradigmatic example of a soft-mode achiral-to-chiral phase transition has been firmly established to date. Here we identify ferroelectric bubble domains as a model system that undergoes a strain-driven achiral-to-chiral transition exhibiting the hallmarks of spontaneous symmetry breaking. Using second-principles atomistic simulations, we uncover chiral phonon modes in ferroelectric/dielectric superlattices that soften under epitaxial strain following textbook soft-mode behaviour. The transition is accompanied by a change in topological character, highlighting an interplay between chirality and topology in these systems. This work provides a concrete step towards establishing chirality as a genuine ferroic order in solids. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_17573 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chiral soft mode transition driven by strain in ferroelectric bubble domains Dey, Urmimala Fedorova, Natalya S. Íñiguez-González, Jorge Aramberri, Hugo Materials Science Chirality in solids is attracting growing attention as a potential ferroic order, yet virtually no paradigmatic example of a soft-mode achiral-to-chiral phase transition has been firmly established to date. Here we identify ferroelectric bubble domains as a model system that undergoes a strain-driven achiral-to-chiral transition exhibiting the hallmarks of spontaneous symmetry breaking. Using second-principles atomistic simulations, we uncover chiral phonon modes in ferroelectric/dielectric superlattices that soften under epitaxial strain following textbook soft-mode behaviour. The transition is accompanied by a change in topological character, highlighting an interplay between chirality and topology in these systems. This work provides a concrete step towards establishing chirality as a genuine ferroic order in solids. |
| title | Chiral soft mode transition driven by strain in ferroelectric bubble domains |
| topic | Materials Science |
| url | https://arxiv.org/abs/2510.17573 |