层间DMI效应振荡行为的实验证据

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2023-11-06 DOI:10.1063/5.0177502

F. S. Gao, S. Q. Liu, R. Zhang, J. H. Xia, W. Q. He, X. H. Li, X. M. Luo, C. H. Wan, G. Q. Yu, G. Su, X. F. Han

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引用次数: 0

摘要

手性自旋相互作用在磁学中起着重要作用。最近的报道揭示了一种新型的反对称和间接自旋相互作用，即层间Dzyaloshinskii–Moriya相互作用（DMI），据预测，它是由离域电子的三点自旋-轨道散射作为额外的Ruderman–Kittel–Kasuya–Yosida（RKKY）效应产生的。在这里，我们研究了类似的Pt/Co/Pt/Ru/Pt/Co/Pt结构中的层间DMI和RKKY相互作用作为间隔物厚度的函数。这两种相互作用都呈现出同步阻尼振荡，并支持它们之间的预测相关性。层间DMI的耦合强度是通过调谐非磁性间隔物的厚度来精细设计的。这项工作可以加深对层间DMI的理解，并指导层间DMI在无场自旋轨道转矩切换或三维手性自旋纹理设计中的控制和使用。

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Experimental evidence of the oscillation behavior of the interlayer DMI effect

Chiral spin interactions play an important role in magnetism. Recent reports have revealed a new type of antisymmetric and indirect spin interaction, namely, the interlayer Dzyaloshinskii–Moriya interaction (DMI), which is predicted to arise from the three-site spin–orbit scattering of delocalized electrons as an additional Ruderman–Kittel–Kasuya–Yosida (RKKY) effect. Here, we investigated the interlayer DMI and RKKY interaction in the similar Pt/Co/Pt/Ru/Pt/Co/Pt structures as a function of spacer thickness. Both interactions present a synchronous damping oscillation and support the predicted relevance between them. The coupling strength of the interlayer DMI was finely engineered by tunning thickness of the nonmagnetic spacer. This work can deepen the understanding of the interlayer DMI and guide the control and use of the interlayer DMI in the field-free spin–orbit torque switching or the design of three-dimensional chiral spin textures.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.