Moire-driven skyrmion family
Kuan He, Meng-Han Li, Shi-Da Fan, Zi-Bin Lin, Xiao-Ying Zhuang, Cheng-Lin Han, Li-Qun Chen, Zhao-Dong Xu, Xue-Feng Zhu, Tian-Zhi Yang

TL;DR
This paper introduces a bilayer twisted moire elastic system as a versatile platform for generating and controlling various skyrmion family members with different topological charges, enabling their coexistence and transformation within a single system.
Contribution
It demonstrates the use of a twisted moire elastic system to observe and control multiple skyrmion types and their dynamics, a novel approach in topological wave physics.
Findings
Twist angle controls skyrmion evolution and coexistence.
Experimental evidence of skyrmion transformation and stability.
Observation of phason-like dynamics in quasiperiodic structures.
Abstract
Skyrmion family members, such as skyrmions, bimerons, and skyrmioniums, have been recently observed in quantum, solid-state, water, and magnetic systems. However, it remains challenging and crucial to identify a single platform for observing their coexistence and evolution. Here, we describe a bilayer twisted moire elastic system as a controllable platform for the generation of skyrmion family members with distinct topological charges across different wave systems. Our experimental results further reveal that the twist angle induces a synergistic evolution between lattice symmetry and topological characteristics, enabling the mutual transformation and stable coexistence of different skyrmion family members within a single system. More importantly, we demonstrate that such a platform supports the discontinuous transport of Lamb-wave-induced topological textures, revealing phason-like…
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Taxonomy
TopicsTopological Materials and Phenomena · Magnetic properties of thin films · Quasicrystal Structures and Properties
