What stabilizes exotic topological spin textures in frustrated intermetallics? In Gd3Ru4Al12, a prototypical skyrmion host, we have recently cracked the puzzle by combining neutron scattering experiments with an unprecedented multi-target theoretical fit. Details of the analysis are presented in arXiv2512.24071.

The result? A rich zoo of chiral magnetic phases emerging from the delicate competition between dipolar interactions and easy-plane single-ion anisotropy atop magnetic frustration. We identify not only a hexagonal skyrmion crystal, but also two distinct meron crystals, including one that is commensurate with the underlying lattice and features a striking three-meron-one-antimeron spin texture, verified by polarized x-ray diffraction.

At higher temperatures, the system enters a codimension-two spiral spin-liquid, where staggered Dzyaloshinskii-Moriya interactions generate chiral fluctuations that explain the anomalous Hall response. This work showcases how neutron scattering, paired with complementary techniques, can unravel complex magnetic phase transitions and illuminate the diverse landscape of topological spin textures in frustrated systems.

(This post is adapted from the output of the Kimi LLM.)