Modulation of the anomalous Hall angle in a magnetic topological semimetal

IF 33.7 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

Nature Electronics Pub Date : 2025-04-02 DOI:10.1038/s41928-025-01364-8

Jinying Yang, Yanxing Shang, Xingchen Liu, Yibo Wang, Xuebin Dong, Qingqi Zeng, Meng Lyu, Shen Zhang, Yang Liu, Binbin Wang, Hongxiang Wei, Yizheng Wu, Stuart Parkin, Gangqin Liu, Claudia Felser, Enke Liu, Baogen Shen

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Abstract

The anomalous Hall angle (θ^A) is a measure of the efficiency of converting a longitudinal driving current into a transverse spin-polarized Hall current. In sensors based on the anomalous Hall effect, a large anomalous Hall angle can improve the sensitivity of magnetic field detection. However, the modulation of this angle is challenging, and magnetic materials typically have low angles of 0.1°–3°. Here we report the modulation of θ^A in the magnetic Weyl semimetal Co₃Sn₂S₂. We show that the anomalous Hall angle parameter tanθ^A can be formulated as a function of the product of electrical resistivity and anomalous Hall conductivity. We use this scheme to demonstrate the modulation of tanθ^A up to a magnitude of 0.46, corresponding to an angle of around 25°. We further fabricate anomalous Hall devices using Fe-doped Co₃Sn₂S₂ single-crystalline nanoflakes and demonstrate a Hall sensitivity of 7,028 ± 341 μΩ cm T^–1 and a magnetic field detectability of 23.5 ± 1.7 nT Hz^–0.5 at 1 Hz.

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磁性拓扑半金属中的反常霍尔角调制

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来源期刊

Nature Electronics Engineering-Electrical and Electronic Engineering

CiteScore

47.50

自引率

2.30%

发文量

159

期刊介绍： Nature Electronics is a comprehensive journal that publishes both fundamental and applied research in the field of electronics. It encompasses a wide range of topics, including the study of new phenomena and devices, the design and construction of electronic circuits, and the practical applications of electronics. In addition, the journal explores the commercial and industrial aspects of electronics research. The primary focus of Nature Electronics is on the development of technology and its potential impact on society. The journal incorporates the contributions of scientists, engineers, and industry professionals, offering a platform for their research findings. Moreover, Nature Electronics provides insightful commentary, thorough reviews, and analysis of the key issues that shape the field, as well as the technologies that are reshaping society. Like all journals within the prestigious Nature brand, Nature Electronics upholds the highest standards of quality. It maintains a dedicated team of professional editors and follows a fair and rigorous peer-review process. The journal also ensures impeccable copy-editing and production, enabling swift publication. Additionally, Nature Electronics prides itself on its editorial independence, ensuring unbiased and impartial reporting. In summary, Nature Electronics is a leading journal that publishes cutting-edge research in electronics. With its multidisciplinary approach and commitment to excellence, the journal serves as a valuable resource for scientists, engineers, and industry professionals seeking to stay at the forefront of advancements in the field.