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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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Song et al. (2025) studied this question.
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