Mean-field theory of the uniaxial ferroelectric smectic A liquid crystal phase
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866909387542495232 |
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| author | Erkoreka, Aitor Huang, Minjung Aya, Satoshi Martinez-Perdiguero, Josu |
| author_facet | Erkoreka, Aitor Huang, Minjung Aya, Satoshi Martinez-Perdiguero, Josu |
| contents | Following the groundbreaking discovery of the ferroelectric nematic liquid crystal phase (NF), a series of closely-related new polar phases have also been found. An especially interesting one is the ferroelectric smectic A phase (SmAF) with spontaneous polarization along the layer normal observed in a few materials of the NF realm. Here, we present a mean-field molecular model that successfully captures the rich phase diagrams experimentally observed in the literature in terms of two parameters. Additionally, we carry out second harmonic generation, X-ray diffraction and birefringence measurements in a compound exhibiting the SmAF phase to determine the appropriate order parameters and compare with the model predictions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_09137 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Mean-field theory of the uniaxial ferroelectric smectic A liquid crystal phase Erkoreka, Aitor Huang, Minjung Aya, Satoshi Martinez-Perdiguero, Josu Soft Condensed Matter Following the groundbreaking discovery of the ferroelectric nematic liquid crystal phase (NF), a series of closely-related new polar phases have also been found. An especially interesting one is the ferroelectric smectic A phase (SmAF) with spontaneous polarization along the layer normal observed in a few materials of the NF realm. Here, we present a mean-field molecular model that successfully captures the rich phase diagrams experimentally observed in the literature in terms of two parameters. Additionally, we carry out second harmonic generation, X-ray diffraction and birefringence measurements in a compound exhibiting the SmAF phase to determine the appropriate order parameters and compare with the model predictions. |
| title | Mean-field theory of the uniaxial ferroelectric smectic A liquid crystal phase |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2408.09137 |