2025-11-04 信州大学
＜関連情報＞
- https://www.shinshu-u.ac.jp/topics/2025/11/post-683.html
- https://www.shinshu-u.ac.jp/topics/upload_file/%28プレスリリース）スキルミオンの流体挙動と論理ゲート機能を理論的に発見.pdf
- https://www.pnas.org/doi/10.1073/pnas.2506204122
カイラルスキルミオン流に基づくナノ流体ロジック Nanofluidic logic based on chiral skyrmion flows
Xichao Zhang, Jing Xia, Yan Zhou, +3 , and Masahito Mochizuki
Proceedings of the National Academy of Sciences Published:October 31, 2025
DOI:https://doi.org/10.1073/pnas.2506204122
Significance
Magnetic skyrmions are particle-like topological spin textures in chiral magnets, which can be used as information carriers in spintronic devices. Our work is a piece of research to apply nanofluidic science to skyrmion-based functional applications, leveraging both the particle-like and fluid-like properties of chiral magnetic skyrmions. Our findings suggest that magnetic skyrmions can be functioned as chiral fluids and one can realize skyrmion-based logic computing in a simplified but more robust fluid manner.
Abstract
Particle-like chiral magnetic skyrmions can flow in nanotracks and behave like chiral fluids. Using interacting flows to perform logical operations is an important topic in microfluidics and nanofluidics. Here, we report a basic nanofluidic logic computing system based on chiral magnetic skyrmions flowing in parallel pipelines connected by an H-shaped junction. The flow behaviors could be manipulated by adjusting the spin polarization angle, which controls the intrinsic skyrmion Hall angle. We demonstrate that within certain range of the spin polarization angle, fully developed skyrmion flows could lead to fluidic logical operations, which significantly reduce the complexity of skyrmion logic as there is no need for deterministic creation, precise control, and detection of a single isolated skyrmion. Our results suggest that the chiral flow behaviors of magnetic quasiparticles may offer possibilities for spintronic and nanofluidic functions.
