Topological solitary fields, such as magnetic and polar skyrmions, are envisioned to revolutionize microelectronics. These configurations have been stabilized in solid‐state materials with a global inversion symmetry breaking, which translates in magnetic materials into a vector spin exchange known as the Dzyaloshinskii–Moriya interaction (DMI), as well as spin chirality selection and isotropic solitons. This work reports experimental evidence of 3D chiral spin textures, such as helical spins and skyrmions with different chirality and topological charge, stabilized in amorphous Fe–Ge thick films. These results demonstrate that structurally and chemically disordered materials with a random DMI can resemble inversion symmetry broken systems with similar magnetic properties, moments, and states. Disordered systems are distinguished from systems with global inversion symmetry breaking by their degenerate spin chirality that allows for forming isotropic and anisotropic topological spin textures at remanence, while offering greater flexibility in materials synthesis, voltage, and strain manipulation.

中文翻译：

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非晶铁-锗厚膜中的手性自旋结构

设想了诸如磁场和极性天空离子之类的拓扑孤场，将彻底改变微电子技术。这些配置在固态材料中得到稳定，具有全局反转对称性破坏，将磁性材料转化为矢量自旋交换，称为Dzyaloshinskii-Moriya相互作用（DMI），以及自旋手性选择和各向同性孤子。这项工作报告了3D手性自旋结构的实验证据，例如具有不同手性和拓扑电荷的螺旋状自旋和天生离子，并稳定在非晶Fe-Ge厚膜中。这些结果表明，具有随机DMI的结构和化学无序的材料可以类似于具有相似磁特性，矩和状态的反对称对称破碎系统。