journal article·2026-01-13

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

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

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Abstract

The magnetic proximity effect (MPE) enables nonmagnetic layers to acquire the induced magnetism through interfacial coupling with adjacent ferromagnetic layers. Self-intercalated Cr 1+δ Te 2 films are ideal materials for forming magnetic heterostructures. However, the MPE and the interfacial exchange coupling in Cr 1+δ Te 2 -based heterostructures remain underexplored. Here, we observe a large anomalous Hall effect (203 nΩ cm at 15 K) in Cr 5 Te 6 /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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Research context

OpenAlex topics: Magnetic properties of thin films · 2D Materials and Applications · Topological Materials and Phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Spintronics, Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures

Nanjing University

Helmholtz-Zentrum-Berlin für Materialen und Energie, Albert-Einstein-Strasse 15, Berlin 12489, Germany

MIIT Key Laboratory of Semiconductor Microstructures and Quantum Sensing, School of Physics

Nanjing University of Science and Technology

College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology)

Nanjing University of Posts and Telecommunications

National Synchrotron Radiation Laboratory

University of Science and Technology of China

Shanghai Synchrotron Radiation Facility

Shanghai Advanced Research Institute, Chinese Academy of Sciences

National Laboratory of Solid State Microstructures School of Physics Nanjing University

Nanjing Institute of Atom Manufacturing

Department of Physics

Xiamen University

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Innovation Program for Quantum Science and Technology

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