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Magnetic proximity effect in biphenylene monolayer from first-principles
Diego López-Alcalá1, José J Baldoví1
1Instituto de Ciencia Molecular, Universitat de València Catedrático José Beltrán 2 46980 Paterna Spain J.Jaime.Baldovi@uv.es.
Journal of Materials Chemistry. C
|February 24, 2025
Summary
We explored the magnetic proximity effect in a biphenylene network (BPN) on yttrium iron garnet (YIG). This heterostructure shows strong magnetic interactions and potential for spintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Surface Science
Background:
- On-surface chemistry enables precise atomic-scale manipulation of low-dimensional materials.
- Heterostructure fabrication is crucial for advanced material design.
Purpose of the Study:
- Investigate the magnetic proximity effect (MPE) in a biphenylene network (BPN)/yttrium iron garnet (YIG) heterostructure.
- Understand the influence of BPN on YIG magnetic properties.
- Explore strategies for spin polarization in BPN.
Main Methods:
- First-principles calculations.
- Study of electronic and magnetic properties.
- Analysis of orbital hybridization and electron transfer at the interface.
Main Results:
- Observed strong hybridization between BPN orbitals and YIG surface states.
- Demonstrated robust MPE with non-homogeneous electron transfer.
- Tuned YIG magnetic properties via BPN interaction.
- Found enhanced spin splitting up to 30% under pressure by varying van der Waals distance.
Conclusions:
- BPN/YIG heterostructures exhibit significant MPE.
- This approach offers a pathway to induce spin polarization in BPN without chemical modification.
- Potential for developing novel BPN-based spintronic devices.
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