Effect of GdIG interfacial layer on the spin pumping in YIG/Pt

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-10-01 DOI:10.1063/5.0272074

Wenzhuo Zhuang, Yequan Chen, Wenxuan Sun, Zhongqiang Chen, Xudong Liu, Ruitong Sun, Ruijie Xu, Xu Zhang, Anke Song, Zhihao Li, Xingze Dai, Fusheng Ma, Liang He, Yongbing Xu, Rong Zhang, Xuefeng Wang

引用次数: 0

Abstract

We report on a growth-induced ∼2.5-nm-thick gadolinium iron garnet (GdIG) interfacial layer formed at the Y3Fe5O12 (YIG) film and Gd3Ga5O12 (GGG) substrate. The exchange coupling between the interfacial GdIG layer and the YIG layer results in an exchange-dominated nonpropagating spin wave (SW) mode aside from the uniform ferromagnetic resonance (FMR) mode observed in spin pumping measurements. The spin current generated by the SW mode is comparable to that generated by the uniform FMR mode. A theoretical model is provided to demonstrate that the exchange coupling between the interfacial GdIG layer and the YIG layer results in two resonance frequencies. Our results provide insights into the generation and propagation of spin currents in the YIG/Pt system for low-power spintronics.

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GdIG界面层对YIG/Pt自旋泵送的影响

我们报道了在Y3Fe5O12 （YIG）薄膜和Gd3Ga5O12 （GGG）衬底上形成的生长诱导的~ 2.5 nm厚的钆铁石榴石（GdIG）界面层。界面GdIG层和YIG层之间的交换耦合导致了交换主导的非传播自旋波（SW）模式，而不是在自旋泵测量中观察到的均匀铁磁共振（FMR）模式。SW模式产生的自旋电流与均匀FMR模式产生的自旋电流相当。给出了一个理论模型来证明界面GdIG层和YIG层之间的交换耦合导致了两个共振频率。我们的结果为低功率自旋电子学的YIG/Pt系统中自旋电流的产生和传播提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.