含 Ta 和 W 的不对称多层膜中的磁纹理和垂直各向异性

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-11-25 DOI:10.1063/5.0239692

S. Al Shukaili, I. Berrai, F. Al Ma'Mari, M. Ramu, S. Bhatti, M. T. Zar Myint, S. Al Harthi, S. M. Cherif, S. N. Piramanayagam, R. Sbiaa

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引用次数: 0

摘要

研究了 X 为 Ta 或 W 的不对称（Pt/Co/X）多层膜。这两种结构都出现了尾状滞后环，表明存在天离子。从布里渊光散射中提取的界面 Dzyaloshinskii-Moriya 相互作用（iDMI）显示，W 样品的值为 -0.52 mJ/m2，是 Ta 样品的 2.5 倍。除了 iDMI 外，由于界面上的轨道杂化，W 样品的垂直磁各向异性也更强。从磁力显微镜观察，W 样品显示了从不规则的棒状结构域到天线状结构域的变化，而 Ta 基结构则是从迷宫状结构域到天线状结构域的变化。

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Magnetic textures and perpendicular anisotropy in asymmetric multilayers with Ta and W

Asymmetric (Pt/Co/X) multilayers where X is Ta or W have been investigated. Both structures showed a tailed hysteresis loop indicating the existence of skyrmions. The interfacial Dzyaloshinskii–Moriya interaction (iDMI) extracted from Brillouin light scattering revealed that sample with W has a value of −0.52 mJ/m2, which is ∼2.5 times larger than Ta case. In addition to iDMI, the perpendicular magnetic anisotropy is also stronger for W case due to the orbital hybridization at the interface. From magnetic force microscopy, W sample showed a change from unusual rod-like domains to skyrmions, while the change was from labyrinth domains to skyrmions in Ta-based structure.

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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.