Unconventional magneto-transport properties of the layered antiferromagnet Fe1/3NbS2

Recently, magnetically intercalated layered transition metal dichalcogenide Fe1/3NbS2 has attracted considerable attention due to its promise for spintronics applications, especially for the demonstration of reversible resistance switching by electrical stimulation below the antiferromagnetic transi...

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Bibliographic Details
Published in:Applied physics letters 2022-08, Vol.121 (8)
Main Authors: Liu, Ping, Zhu, Hanpeng, Wu, Qingmei, Lu, Yalin, Pu, Yong
Format: Article
Language:English
Subjects:
Anisotropy
Antiferromagnetism
Applied physics
Chalcogenides
Hall effect
Magnetic properties
Magnetism
Magnetoresistance
Magnetoresistivity
Neel temperature
Spintronics
Temperature dependence
Transition metal compounds
Transition temperature
Transport phenomena
Transport properties
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Summary:Recently, magnetically intercalated layered transition metal dichalcogenide Fe1/3NbS2 has attracted considerable attention due to its promise for spintronics applications, especially for the demonstration of reversible resistance switching by electrical stimulation below the antiferromagnetic transition temperature. Magneto-transport properties and their correlation to the underlying magnetic configurations are yet to be clarified in Fe1/3NbS2. Herein, we investigate the magneto-transport behavior of antiferromagnet Fe1/3NbS2, demonstrating a complex behavior of the magnetoresistance and unconventional Hall effect. The resistance of this compound displayed metallic behavior and an abrupt decrease at TN. Of particular interest, the positive magnetoresistance is enhanced and it reaches a maximum in the vicinity of Néel temperature as a function of the out-of-plane magnetic field, which is in contrast to most of the antiferromagnets. Meanwhile, the Hall signal showed an unusual nonlinear field-dependence in the same temperature range. Moreover, the magnetoresistance exhibits a significant anisotropy, up to 14% near the Néel temperature. We attributed these unconventional magneto-transport behaviors to the field induced formation of a complex spin texture in Fe1/3NbS2. Our work motivates further efforts on antiferromagnetic spintronic devices based on this intercalated layered transition metal dichalcogenide.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0098797