On the anomalous low-resistance state and exceptional Hall component in hard-magnetic Weyl nanoflakes

Zeng Q, Gu G, Shi G, Shen J, Ding B, Zhang S, Xi X, Felser C, Li Y, Liu E (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Science China-Physics Mechanics & Astronomy Springer Verlag (Germany)

Book Volume: 64

Article Number: 287512

Journal Issue: 8

DOI: 10.1007/s11433-021-1715-4

Abstract

Magnetic topological materials, which combine magnetism and topology, are expected to host emerging topological states and exotic quantum phenomena. In this study, with the aid of greatly enhanced coercive fields in high-quality nanoflakes of the magnetic Weyl semimetal Co3Sn2S2, we investigate anomalous electronic transport properties that are difficult to reveal in bulk Co3Sn2S2 or other magnetic materials. When the magnetization is antiparallel to the applied magnetic field, the low longitudinal resistance state occurs, which is in sharp contrast to the high resistance state for the parallel case. Meanwhile, an exceptional Hall component that can be up to three times larger than conventional anomalous Hall resistivity is also observed for transverse transport. These anomalous transport behaviors can be further understood by considering nonlinear magnetic textures and the chiral magnetic field associated with Weyl fermions, extending the longitudinal and transverse transport physics and providing novel degrees of freedom in the spintronic applications of emerging topological magnets.

Involved external institutions

Chinese Academy of Sciences (CAS) / 中国科学院 CN China (CN) University of California Los Angeles (UCLA) US United States (USA) (US) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Zeng, Q., Gu, G., Shi, G., Shen, J., Ding, B., Zhang, S.,... Liu, E. (2021). On the anomalous low-resistance state and exceptional Hall component in hard-magnetic Weyl nanoflakes. Science China-Physics Mechanics & Astronomy, 64(8). https://doi.org/10.1007/s11433-021-1715-4

MLA:

Zeng, Qingqi, et al. "On the anomalous low-resistance state and exceptional Hall component in hard-magnetic Weyl nanoflakes." Science China-Physics Mechanics & Astronomy 64.8 (2021).

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