Year: 2026
Type: article
Abstract: ABSTRACT Owing to their unique crystal structures, van der Waals (vdW) materials provide a versatile platform for exploring emergent physical phenomena and enabling next‐generation electronic and spintronic applications. However, the direct correlations between vdW crystal and intrinsic properties, such as magnetism, remain largely unexplored. Here, we demonstrate that a variety of structure‐correlated topological spin textures, characterized by highly regular shapes ranging from triangles to octagons and arranged in periodic patterns, can be induced in vdW crystals. Owing to their well‐resolved boundaries, the entire evolution of the quasiparticle characteristics of the topological structures, including creation, structural distortions, and collision were unambiguously revealed. More importantly, it was found that the topological annihilation occurs in an explosive manner, providing direct confirmation of the quasiparticle nature at the scale of a single magnetic unit. Simulations reveal that their formation arises from the interplay between uniaxial anisotropy and dipolar interactions, further modulated by the lattice background. These findings uncover a previously unrecognized structure‐property relationship in vdW magnets and open avenues for designing and tunning of new topological spin textures.
Source: Advanced Functional Materials
DOI: 10.1002/adfm.74354
Institutions: University of Science and Technology of China, Chinese Academy of Sciences, High Magnetic Field Laboratory, Hubei Normal University, Institute of Solid State Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Institute of Semiconductors
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7127975594