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Engineering two-dimensional material heterostructures by combining the bestof different materials in one ultimate unit can offer a plethora ofopportunities in condensed matter physics. Here, in the van der Waalsheterostructures of the ferromagnetic insulator Cr2Ge2Te6 and graphene, ourobservations indicate an out-of-plane proximity-induced ferromagnetic exchangeinteraction in graphene. The perpendicular magnetic anisotropy of Cr2Ge2Te6results in significant modification of the spin transport and precession ingraphene, which is ascribed to the proximity-induced exchange interaction.Furthermore, the observation of a larger lifetime for perpendicular spins incomparison to the in-plane counterpart suggests the creation of aproximity-induced anisotropic spin texture in graphene. Our experimentalresults and density functional theory calculations open up opportunities forthe realization of proximity-induced magnetic interactions and spin filters in2D material heterostructures and can form the basic building blocks for futurespintronic and topological quantum devices.

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