Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene

Bogdan Karpiak, Aron W Cummings, Klaus Zollner, Marc Vila, Dmitrii Khokhriakov, Md. Anamul Md Hoque, Andre Dankert, Peter Svedlindh, Jaroslav Fabian, Stephan Roche, Saroj Prasad Dash
2019 2D Materials  
al (2020) Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene 2D Materials, 7(1) http://dx. Abstract Engineering 2D material heterostructures by combining the best of different materials in one ultimate unit can offer a plethora of opportunities in condensed matter physics. Here, in the van der Waals heterostructures of the ferromagnetic insulator Cr 2 Ge 2 Te 6 and graphene, our observations indicate an out-of-plane proximity-induced ferromagnetic exchange
more » ... nteraction in graphene. The perpendicular magnetic anisotropy of Cr 2 Ge 2 Te 6 results in significant modification of the spin transport and precession in graphene, which can be ascribed to the proximity-induced exchange interaction. Furthermore, the observation of a larger lifetime for perpendicular spins in comparison to the in-plane counterpart suggests the creation of a proximity-induced anisotropic spin texture in graphene. Our experimental results and density functional theory calculations open up opportunities for the realization of proximity-induced magnetic interactions and spin filters in 2D material heterostructures and can form the basic building blocks for future spintronic and topological quantum devices.
doi:10.1088/2053-1583/ab5915 fatcat:tssr6wx6hvdixozduyic6e6mya