Polarity-Reversal of Exchange Bias in van der Waals FePS3/Fe3GaTe2 Heterostructures
Author Information
Author(s): H. Xiao, B. Lyu, M. Mi, J. Yuan, X. Zhang, L. Yu, Q. Cui, C. Wang, J. Song, M. Huang, Y. Tian, L. Liu, T. Taniguchi, K. Watanabe, M. Liu, Y. Guo, S. Wang, Y. Wang
Primary Institution: Shandong University
Hypothesis
The study investigates the temperature-dependent polarity-reversal behavior of exchange bias in FePS3/Fe3GaTe2 heterostructures under high cooling fields.
Conclusion
The study found a significant exchange bias effect with temperature-dependent polarity-reversal behavior in FePS3/Fe3GaTe2 heterostructures.
Supporting Evidence
- A significant exchange bias effect was observed in FePS3/Fe3GaTe2 heterostructures.
- The polarity of exchange bias reverses from negative to positive at approximately 20 K.
- The exchange bias effect can extend to the bare region of the Fe3GaTe2 flake.
- The study proposes a model explaining the temperature-dependent polarity-reversal behavior.
- Charge transfer at the interface induces net magnetic moments in FePS3.
Takeaway
This study shows that the magnetic properties of certain materials can change with temperature, which could help create new types of electronic devices.
Methodology
The researchers used anomalous Hall effect measurements and reflective magnetic circular dichroism to study the exchange bias in the heterostructures.
Digital Object Identifier (DOI)
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