Origin of skyrmion lattice phase splitting in Zn-substituted Cu${}_2$OSeO${}_3$

Abstract

We present an investigation into the structural and magnetic properties of Zn-substituted Cu${}_2$OSeO${}_3$, a system in which the skyrmion lattice (SkL) phase in the magnetic field-temperature phase diagram was previously seen to split as a function of increasing Zn concentration. We find that splitting of the SkL is only observed in polycrystalline samples and reflects the occurrence of several coexisting phases with different Zn content, each distinguished by different magnetic behaviour. No such multiphase behaviour is observed in single crystal samples.

arXiv comment5 pages, 6 figures, includes supplemental material

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Cited by in corpus (16)

• Increased lifetime of metastable skyrmions by doping
• Measuring the Formation Energy Barrier of Skyrmions in Zinc Substituted Cu${}_2$OSeO${}_3$
• Megahertz dynamics in skyrmion systems probed with muon-spin relaxation
• Anisotropic fractal magnetic domain pattern in bulk Mn${}_{1.4}$PtSn
• Anisotropic skyrmion and multi-$q$ spin dynamics in centrosymmetric Gd${}_2$PdSi${}_3$
• Magnetism and Néel skyrmion dynamics in GaV${}_4$S${}_{8-y}$Se${}_y$
• Stability and Metastability of Skyrmions in Thin Lamellae of Cu${}_2$OSeO${}_3$
• Increasing the skyrmion stability in Cu${}_2$OSeO${}_3$ by chemical substitution
• Pinning of Helimagnetic Phase Transitions in Zn-Substituted Skyrmion Host Cu${}_2$OSeO${}_3$
• Establishing magneto-structural relationships in the solid solutions of the skyrmion hosting family of materials: GaV${}_4$S${}_{8-y}$Se${}_y$
• Experimental Evidence of a change of Exchange Anisotropy Sign with Temperature in Zn-Substituted Cu2OSeO3
• Direct observation of the exchange anisotropy in the helimagnetic insulator Cu${}_2$OSeO${}_3$
• Spin dynamics in bulk MnNiGa and Mn${}_{1.4}$Pt${}_{0.9}$Pd${}_{0.1}$Sn investigated by muon spin relaxation
• Effect of chemical substitution on the skyrmion phase in Cu${}_2$OSeO${}_3$
• Structure and magnetism of the skyrmion hosting family GaV${}_4$S${}_{8-y}$Se${}_y$ with low levels of substitutions between $0\le y\le 0.5$ and $7.5\le y\le 8$
• Investigations of the size distribution and magnetic properties of nanoparticles of Cu${}_2$OSeO${}_3$