Spin Transport and Magnetic Proximity Effect in CoFeB/Normal Metal/Pt Trilayers

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-12-06 DOI:10.1109/LMAG.2023.3340122

Simon Häuser;Matthias R. Schweizer;Sascha Keller;Andres Conca;Moritz Hofherr;Evangelos Papaioannou;Benjamin Stadtmüller;Burkard Hillebrands;Martin Aeschlimann;Mathias Weiler

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引用次数: 0

Abstract

We present a study of the damping and spin pumping properties of CoFeB/X/Pt systems with

$\rm X=Al,Cr$

, and

$\rm Ta$

. We show that the total damping of the CoFeB/Pt systems is strongly reduced when an interlayer is introduced independently of the material. Using a model that considers spin relaxation, we identify the origin of this contribution in the magnetically polarized Pt formed by the magnetic proximity effect (MPE), which is suppressed by the introduction of the interlayer. The induced ferromagnetic order in the Pt layer is confirmed by element-sensitive transverse magneto-optical Kerr spectroscopy at the M

$_{2,3}$

and N

$_{7}$

absorption edges. We discuss the impact of the MPE on parameter extraction in the spin transport model.

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CoFeB/ 正常金属/铂三层膜中的自旋传输和磁接近效应

我们介绍了对具有 $\rm X=Al,Cr$ 和 $\rm Ta$ 的 CoFeB/X/Pt 系统的阻尼和自旋泵特性的研究。我们的研究表明，当引入独立于材料的夹层时，CoFeB/Pt 系统的总阻尼会大大降低。通过使用一个考虑自旋弛豫的模型，我们确定了由磁接近效应（MPE）形成的磁极化铂中这一贡献的来源，而引入中间膜后，磁接近效应被抑制。在 M$_{2,3}$ 和 N$_7$ 吸收边作为元素敏感探针的横向磁光 Kerr 光谱证实了铂层中的诱导铁磁秩序。我们讨论了 MPE 对自旋输运模型参数提取的影响。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.