具有空间交替应力的合成反铁磁体中出现巨大的交错Dzyaloshinskii-Moriya矢量
Giant staggered Dzyaloshinskii-Moriya vectors emerged in synthetic antiferromagnets with spatially alternating stress
查看机构详情
- Nagoya University（名古屋大学）
- Chiba University（千叶大学）
机构由 AI 辅助整理，请以论文原文为准。
浏览论文内容
中文总结 AI 辅助
该研究通过特殊应力机制技术在Co/Ru磁性超晶格中引入交替机械应变，破坏其结构对称性，实现了对DM相互作用强度及DM矢量有序性的控制，揭示了交错DM矢量的存在。
中文摘要 AI 辅助
Dzyaloshinskii-Moriya（DM）相互作用是手性磁学的来源，它体现了微观结构对称性，可关联到如反常磁性等奇特的磁性和电子性质。对于磁学和自旋电子学的新范式，控制DM相互作用以及表征该相互作用的DM矢量有序性至关重要。本研究报道了Co/Ru磁性超晶格中出现的强层间DM相互作用，其结构对称性被我们采用的特殊应力机制技术产生的交替机械应变明确破坏。此外，理论分析表明该磁性超晶格具有DM矢量的交错有序性。我们的结果表明，采用突破性技术的空间变化应变能有效破坏系统对称性，并证明其可控制DM相互作用强度及DM矢量有序性。
英文摘要
Dzyaloshinskii-Moriya (DM) interaction is a source of chiral magnetic physics, and it manifests microstructural symmetry which could link to exotic magnetic and electronic properties such as altermagnetism. For a new paradigm in magnetism and spintronics, it is crucial to have control on the DM interaction as well as ordering of the DM vectors which characterize the DM interaction. Here, we report on a strong interlayer DM interaction emerged in Co/Ru magnetic superlattices whose structural symmetry is unambiguously broken by alternating mechanical strains developed using the peculiar technique of our stress mechanism. Moreover, theoretical analyses reveal that our magnetic superlattices host a staggered order of the DM vectors. Our results indicate that the spatially varying strains with our breakthrough technique are quite effective in breaking the symmetry of the system and prove that it can control the DM interaction strength as well as the DM vector order.
