1. Sublattice Ferrimagnetism in Quasifreestanding Graphene.
- Author
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Rybkin AG, Tarasov AV, Rybkina AA, Usachov DY, Petukhov AE, Eryzhenkov AV, Pudikov DA, Gogina AA, Klimovskikh II, Di Santo G, Petaccia L, Varykhalov A, and Shikin AM
- Subjects
- Environment, Fruit, Graphite
- Abstract
We show that graphene can be magnetized by coupling to a ferromagnetic Co film through a Au monolayer. The presence of dislocation loops under graphene leads to a ferrimagnetic ordering of moments in the two C sublattices. It is shown that the band gap of ∼80 meV in the K[over ¯] point has a magnetic nature and exists for ferrimagnetic ordering. Interplay between Rashba and exchange couplings is evidenced by spin splitting asymmetry in spin-ARPES measurements and fully supported by DFT calculation of a (9×9) unit cell. Owing to sign-opposite Berry curvatures for K[over ¯] and K[over ¯]^{'} valleys, the synthesized system is promising for the realization of a circular dichroism Hall effect.
- Published
- 2022
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