Evidence of Antiferromagnetic Interfacial Exchange Coupling in Cr <sub>5</sub> Te <sub>6</sub> /Pt Heterostructures with a Large Anomalous Hall Effect

The magnetic proximity effect (MPE) enables nonmagnetic layers to acquire the induced magnetism through interfacial coupling with adjacent ferromagnetic layers. Self-intercalated Cr1+δTe2 films are ideal materials for forming magnetic heterostructures. However, the MPE and the interfacial exchange coupling in Cr1+δTe2-based heterostructures remain underexplored. Here, we observe a large anomalous Hall effect (203 nΩ cm at 15 K) in Cr5Te6/Pt heterostructures, representing the maximum value reported in magnetic insulator/heavy metal heterostructures so far. X-ray magnetic circular dichroism and X-ray resonant magnetic scattering measurements clearly confirm MPE-induced magnetic moments in the Pt thin layer. An antiferromagnetic exchange coupling is revealed, and first-principles calculations further clarify the underlying microscopic mechanism.

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Publication Details

Journal
ACS Applied Electronic Materials
Published
2025-12-23
DOI
https://doi.org/10.1021/acsaelm.5c02265
Primary Topic
Magnetic properties of thin films
Type
article
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article

Evidence of Antiferromagnetic Interfacial Exchange Coupling in Cr 5 Te 6 /Pt Heterostructures with a Large Anomalous Hall Effect

Yequan Chen, Xudong Liu, Xuechao Zhai, Anke Song et al.
ACS Applied Electronic Materials
Magnetic properties of thin films
article

Evidence of Antiferromagnetic Interfacial Exchange Coupling in Cr 5 Te 6 /Pt Heterostructures with a Large Anomalous Hall Effect

Yequan Chen, Xudong Liu, Xuechao Zhai, Anke Song, Xuefeng Wang, Xinjuan Cheng, Chen Luo, Fangyuan Zhu, Fengqi Song, Ruijie Xu, Rong Zhang, Kai Chen
article en

Abstract

The magnetic proximity effect (MPE) enables nonmagnetic layers to acquire the induced magnetism through interfacial coupling with adjacent ferromagnetic layers. Self-intercalated Cr1+δTe2 films are ideal materials for forming magnetic heterostructures. However, the MPE and the interfacial exchange coupling in Cr1+δTe2-based heterostructures remain underexplored. Here, we observe a large anomalous Hall effect (203 nΩ cm at 15 K) in Cr5Te6/Pt heterostructures, representing the maximum value reported in magnetic insulator/heavy metal heterostructures so far. X-ray magnetic circular dichroism and X-ray resonant magnetic scattering measurements clearly confirm MPE-induced magnetic moments in the Pt thin layer. An antiferromagnetic exchange coupling is revealed, and first-principles calculations further clarify the underlying microscopic mechanism.

ACS Applied Electronic MaterialsVol. 8(1)
University of Science and Technology of China (CN), Xiamen University (CN), Chinese Academy of Sciences (CN), Nanjing Institute of Technology (CN), Helmholtz-Zentrum Berlin für Materialien und Energie (DE), Nanjing University of Science and Technology (CN), Nanjing University of Posts and Telecommunications (CN), Shanghai Advanced Research Institute (CN), Laboratoire d'Étude des Microstructures (FR), Collaborative Innovation Center of Advanced Microstructures (CN), National Synchrotron Radiation Laboratory (CN), Shanghai Synchrotron Radiation Facility, Nanjing University (CN)
Openalex Percentile: Top 33%
Magnetic properties of thin films
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