Hopfions emerge in ferroelectrics

I. Luk’yanchuk, Y. Tikhonov, A. Razumnaya and V. M. Vinokur ()
Additional contact information
I. Luk’yanchuk: University of Picardie
Y. Tikhonov: University of Picardie
A. Razumnaya: Southern Federal University
V. M. Vinokur: Argonne National Laboratory

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: Abstract Paradigmatic knotted solitons, Hopfions, that are characterized by topological Hopf invariant, attract an intense attention in the diverse areas of physics ranging from high-energy physics, cosmology and astrophysics to biology, magneto- and hydrodynamics and condensed matter physics. Yet, while being of broad interest, they remain elusive and under-explored. Here we demonstrate that Hopfions emerge as a basic configuration of polarization field in confined ferroelectric nanoparticles. Our findings establish that Hopfions are of fundamental importance for the electromagnetic behavior of the nanocomposits and can result in advanced functionalities of these materials.

Date: 2020
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DOI: 10.1038/s41467-020-16258-w

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