Abstract

Magnetic skyrmions discovered in chiral magnets show unique physical properties due to their nontrivial topology. While their basic properties have been well understood for pure systems, in real materials there is always disorder from, for example, crystal defects or impurities. This glassy nature substantially modifies the low-energy behavior, and hence the investigation of the skyrmion glass is crucial to understanding real materials. Here, the authors theoretically study disordered chiral magnets in terms of replica field theory, and provide a firm basis to explore the glassy state of magnetic skyrmions.

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