高质量人工斯格明子晶体制备、动力学及操控研究

磁性材料中的斯格明子（skyrmion）具有很多新奇的物理性质和重要的应用前景，是近几年国际上的研究热点之一。通常的斯格明子要求材料本身具有非共线的Dzyaloshinskii-Moriya相互作用，并且存在的相空间较小，还低于室温，极大地限制了其应用范围。我们近期提出了人工斯格明晶体的新概念，并已在实验上得以验证，获得了室温稳定的人工斯格明子晶体。本项目拟对人工斯格明子晶体进一步深入研究，寻求高质量人工斯格明子晶体的制备方法，利用微磁学、变频铁磁共振、超快磁成像技术研究其动力学行为和磁、电操控行为，探索其在磁存储与逻辑器件方面的应用。

Magnetic skyrmion crystals have attracted great interest both theoretically and experimentally due to their unique physical properties and potential applications. It typically requires the material to have the noncollinear interaction, the Dzyaloshinskii-Moriya interaction and has limited phase diagram which is still below room temperature. We recently proposed and experimentally realized the artificial skyrmion crystal at room temperature. We plan to further improve the fabrication method to obtain high quality artificial skyrmion crystal and investigate its dynamic behavior and topological property control with the goal to explore its potential functionality in storage and logic devices.