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arXiv · 2109.13682

Mean-field approach for skyrmion lattice in hexagonal frustrated antiferromagnets

Oleg I. Utesov
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Abstract

Simple mean-field approach for frustrated antiferromagnets on hexagonal lattices, aimed to describe the high-temperature part of the temperature-magnetic field phase diagram, is proposed. It is shown, that an interplay between modulation vector symmetry, Zeeman energy and magneto-dipolar interaction leads to stabilization of the triple-$Q$ skyrmion lattice in a certain region of the phase diagram. Corresponding analytical expressions for phase boundaries are derived. It is argued that the developed theory can be applied for the description of the high-temperature part of the phase diagram observed experimentally for Gd$_2$PdSi$_3$ compound.

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Oleg I. Utesov. 2021-09-28. Mean-field approach for skyrmion lattice in hexagonal frustrated antiferromagnets. https://doi.org/10.1103/physrevb.105.054435

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