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- W4320342214 abstract "Particles in a crowded environment exhibit slow anomalous diffusion, as seen in biological systems, polymer solutions, glass-forming liquids and granular materials, and our daily experiences. In crystals, constituent particles do not diffuse, but skyrmions and half-skyrmions, spatially localised quasiparticles, exhibit normal diffusion in dilute conditions. However, the cooperative dynamics and diffusion of (half-)skyrmions in liquid, hexatic, and crystalline phases are elusive. Here we show that the fusion and fission of half-skyrmions, not their diffusion, are responsible for the primary structural relaxation in these condensed phases. The diffusion, which contributes to the secondary structural relaxation, is suppressed by cages formed by surrounding half-skyrmions, whereas enhanced by Mermin-Wagner fluctuation characteristic to two-dimensional systems, leading to subdiffusive motion. Large displacement of half-skyrmions is locally induced by fusion-fission and bond-breaking between adjacent half-skyrmions. Furthermore, the motion of half-skyrmions couples with transverse and longitudinal sound wave excitation differently. Our result provides a qualitative difference in dynamical properties between skyrmion gaseous and condensed phases, suggesting the efficient manipulation of high-density (half-)skyrmions in molecular crystals, liquid crystals, and magnets." @default.
- W4320342214 created "2023-02-13" @default.
- W4320342214 creator A5069127789 @default.
- W4320342214 creator A5087402398 @default.
- W4320342214 date "2023-02-08" @default.
- W4320342214 modified "2023-10-16" @default.
- W4320342214 title "Diffusionless relaxation of half-skyrmion liquid, hexatic, and crystalline states in a chiral molecular crystal" @default.
- W4320342214 doi "https://doi.org/10.48550/arxiv.2302.04021" @default.
- W4320342214 hasPublicationYear "2023" @default.
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