Interface structure and fabrication process of FePd/2D material heterojunctions
Poster-In-person
Abstract
The FePd alloy with L10-ordered structure exhibits a large magnetic anisotropy and low damping, making it a promising candidate for next-generation spintronics applications. Recent experimental advancements have enabled the synthesis of a van der Waals heterointerface between FePd and graphene.
In our work, we have performed first-principles electron structure and spin-transport calculations, revealing that the surface atomic structure and magnetoresistance ratio, which reaches 100% to 300% in the FePd/Gr/FePd heterojunction.
We further theoretically demonstrate that oxygen-induced segregation of Fe at the FePd/graphene boundary is crucial for stabilizing this well-defined interface, a conclusion supported by complementary X-ray photoelectron spectroscopy. In addition, we have extended our investigation to the interfaces of various other 2D materials, including PdSe2 and WS2. These findings provide a unified understanding of interfacial chemistry and spin transport in FePd/2D‑material heterostructures.
In our work, we have performed first-principles electron structure and spin-transport calculations, revealing that the surface atomic structure and magnetoresistance ratio, which reaches 100% to 300% in the FePd/Gr/FePd heterojunction.
We further theoretically demonstrate that oxygen-induced segregation of Fe at the FePd/graphene boundary is crucial for stabilizing this well-defined interface, a conclusion supported by complementary X-ray photoelectron spectroscopy. In addition, we have extended our investigation to the interfaces of various other 2D materials, including PdSe2 and WS2. These findings provide a unified understanding of interfacial chemistry and spin transport in FePd/2D‑material heterostructures.
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· 434Publication: arXiv:2502.00328
Presenters
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Mitsuharu Uemoto
- Kobe University