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Article Dans Une Revue SciPost Physics Année : 2023

Vortex states in a PbTiO3 ferroelectric cylinder


The past decade’s discovery of topological excitations in nanoscale ferroelectrics has turned the prevailing view that the polar ground state in these materials is uniform. However, the systematic understanding of the topological polar structures in ferroelectrics is still on track. Here we study stable vortex-like textures of polarization in the nanocylinders of ferroelectric PbTiO _3 3 , arising due to the competition of the elastic and electrostatic interactions. Using the phase-field numerical modeling and analytical calculations, we show that the orientation of the vortex core with respect to the cylinder axis is tuned by the geometrical parameters and temperature of the system.

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hal-04106568 , version 1 (25-05-2023)



Svitlana Kondovych, Maksim Pavlenko, Yurii Tikhonov, Anna Razumnaya, Igor Lukyanchuk. Vortex states in a PbTiO3 ferroelectric cylinder. SciPost Physics, 2023, 14 (3), pp.056. ⟨10.21468/SciPostPhys.14.3.056⟩. ⟨hal-04106568⟩
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