二维铬OCl/铂异质结构中磁接近性诱导的反常霍尔效应

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-11-12 DOI:10.1063/5.0237508

Zelong Li, Anwar Ali, Duo Zhao, Wei Tang, Muhammad Younis, Lu Qi, Sichao Dai, Chenxu Kang, Xiaoliang Weng, Xiaokeng Wu, Aymeric Ramiere, Yu-Jia Zeng

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引用次数: 0

摘要

二维（2D）范德华反铁磁（AFM）材料在自旋电子学方面具有卓越的性能，包括高自旋波速度和可忽略不计的杂散磁场。将这些材料逐层组装成异质结构可以探索下一代自旋电子器件。然而，大多数二维 AFM 材料都是半导体或绝缘体。因此，作为自旋电子学关键部分的磁传输很难实现，尤其是在低温条件下。在此，我们报告了在二维铬OCl/铂双层异质结构中观察到的反常霍尔效应（AHE）。密度泛函理论计算支持的磁传输测量结果表明，反常霍尔效应的出现是由磁接近效应导致的铂自旋极化引起的。此外，研究还证明，在异质结构的界面上，磁易轴从 Z 轴变为 XY 平面。我们的研究揭示了二维 CrOCl 的磁传输特性及其在新兴自旋电子器件中的潜力。

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Magnetic proximity-induced anomalous Hall effect in 2D CrOCl/Pt heterostructure

Two-dimensional (2D) van der Waals antiferromagnetic (AFM) materials boast exceptional properties for spintronics, including high spin-wave speeds and negligible stray fields. Their layer-by-layer assembly into heterostructures enables the exploration of next-generation spintronic devices. However, most 2D AFM materials are semiconductors or insulators. Thus, magneto-transport, a key segment of spintronics, is difficult to obtain especially at low temperatures. Herein, we report the observation of anomalous Hall effect (AHE) in 2D CrOCl/Pt bilayer heterostructure. Magneto-transport measurements supported by density functional theory calculations reveal that the appearance of AHE is generated by spin polarization in Pt due to the magnetic proximity effect. In addition, it is demonstrated that the magnetic easy-axis changes from the z-axis to the xy-plane at the interface of the heterostructure. Our work sheds light on the magneto-transport properties of 2D CrOCl and its potential in emerging spintronic devices.

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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.