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arXiv · 2206.08017

Polarisation-driven magneto-optical and nonlinear-optical behaviour of a room-temperature ferroelectric nematic phase

Evangelia Zavvou·Melanie Klasen-Memmer·Atsutaka Manabe·Matthias Bremer·Alexey Eremin
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Abstract

Nematics with a broken polar symmetry is one of the fascinating recent discoveries in the field of soft matter. High spontaneous polarisation and the fluidity of the ferroelectric nematic $N_{\mathrm{F}}$ phase make such materials attractive for future applications and interesting for fundamental research. Here we explore the polar and mechanical properties of a room-temperature ferroelectric nematic and its behaviour in a magnetic field. We show that $N_{\mathrm{F}}$ is much less susceptible to the splay deformation than to the twist. The strong splay rigidity can be attributed to the electrostatic self-interaction of the polarisation avoiding the polarisation splay.

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Evangelia Zavvou, Melanie Klasen-Memmer, Atsutaka Manabe, Matthias Bremer, Alexey Eremin. 2022-06-16. Polarisation-driven magneto-optical and nonlinear-optical behaviour of a room-temperature ferroelectric nematic phase. https://doi.org/10.1039/d2sm01298g

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