2016年4月
Effective long-range interlayer interactions and electric-field-induced subphases in ferrielectric liquid crystals
PHYSICAL REVIEW E
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- 巻
- 93
- 号
- 4
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevE.93.042707
- 出版者・発行元
- AMER PHYSICAL SOC
Microbeam resonant x-ray scattering experiments recently revealed the sequential emergence of electric-field-induced subphases (stable states) with exceptionally large unit cells consisting of 12 and 15 smectic layers. We explain the emergence of the field-induced subphases by the quasimolecular model based on the Emelyanenko-Osipov long-range interlayer interactions (LRILIs) together with our primitive way of understanding the frustration in clinicity using the q(E) number defined as q(E) = vertical bar[R]-[L]|/([R] + [L]); here [R] and [L] refer to the numbers of smectic layers with directors tilted to the right and to the left, respectively, in the unit cell of a field-induced subphase. We show that the model actually stabilizes the field-induced subphases with characteristic composite unit cells consisting of several blocks, each of which is originally a ferrielectric three-layer unit cell stabilized by the LRILIs, but some of which would be modified to become ferroelectric by an applied electric field. In a similar line of thought, we also try to understand the puzzling electric-field-induced birefringence data in terms of the LRILIs.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevE.93.042707
- ISSN : 2470-0045
- eISSN : 2470-0053
- Web of Science ID : WOS:000374553500005