在中心对称磁体中的丧诱导的 skyrmion 晶体
1Molecular Photoscience Research Center, Kobe University, Kobe, Hyogo 657-8501, Japan.
概括
本综述涵盖了中心对称磁体中的丧诱导的 skyrmion 晶体 (SkX),强调了理论和实验. 它强调了挫折,性和磁性异构在SkX形成和性质中的作用.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 理论物理 理论物理
背景情况:
- 斯基尔米昂晶体 (SkX) 是拓式旋转纹理,在数据存储中具有潜在的应用.
- 中心对称磁铁为SkX形成提供了另一种途径,与非中心对称材料不同.
- 挫折和性是这些材料中稳定SkX的关键成分.
研究的目的:
- 审查中心对称磁体中丧诱导的 skyrmion 晶体 (SkX) 的最新理论和实验进展.
- 为了强调这些SkX阶段的对称性和拓方面.
- 讨论中心对称SkX的物理起源和独特特征.
主要方法:
- 在各种格子 (三角形,方形,kagome) 上使用丧的海森堡和康多格子模型进行理论研究.
- 采用磁化,比热,霍尔电阻,共振磁性X射线散射,中子散射和洛伦兹传输电子显微镜等技术的实验调查.
- 分析磁性异极性,包括双极相互作用.
主要成果:
- 由于相互竞争的交易互动或长距离的RKKY互动而产生的挫折对于SkX形成至关重要.
- 在Gd2PdSi3,Gd3Ru4Al12,GdRu2Si2和EuAl4.4等材料中实验观察到中心对称的SkX.
- 已经描述了围绕SkX阶段的各种阶段,包括多个q阶段.
结论:
- 中心对称的SkX形成是由丧和奇拉性驱动的,磁性异构性有显著的贡献.
- 这些SkX与非中心对称对应物相比,具有独特的特性.
- 需要进一步的研究来应对现有挑战,并探索该领域的未来方向.
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