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

Abstract

Engineering two-dimensional 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 Cr2Ge2Te6 and graphene, our observations indicate an out-of-plane proximity-induced ferromagnetic exchange interaction in graphene. The perpendicular magnetic anisotropy of Cr2Ge2Te6 results in significant modification of the spin transport and precession in graphene, which is 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.

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Cited by in corpus (20)

• Electrical and Thermal Generation of Spin Currents by Magnetic Graphene
• Observation of Spin Hall Effect in Weyl Semimetal WTe2 at Room Temperature
• Swapping Exchange and Spin-Orbit Coupling in 2D van der Waals Heterostructures
• Two-Dimensional Spintronic Circuit Architectures on Large Scale Graphene
• A Combined First Principles Study of the Structural, Magnetic, and Phonon Properties of Monolayer CrI${}_3$
• Scattering-induced and highly tunable by gate damping-like spin-orbit torque in graphene doubly proximitized by two-dimensional magnet Cr${}_2$Ge${}_2$Te${}_6$ and WS${}_2$
• Gate-tunable proximity effects in graphene on layered magnetic insulators
• Engineering Proximity Exchange by Twisting: Reversal of Ferromagnetic and Emergence of Antiferromagnetic Dirac Bands in Graphene/Cr${}_2$Ge${}_2$Te${}_6$
• Proximity effects in graphene on monolayers of transition-metal phosphorus trichalcogenides MPX${}_3$
• Bilayer graphene encapsulated within monolayers of WS${}_2$ or Cr${}_2$Ge${}_2$Te${}_6$: Tunable proximity spin-orbit or exchange coupling
• Transport measurements on van der Waals heterostructures under pressure
• Elucidating proximity magnetism through polarized neutron reflectometry and machine learning
• Towards fully two-dimensional spintronic devices
• Gate-tunable anomalous Hall effect in a 3D topological insulator/2D magnet van der Waals heterostructure
• Defect-induced $4p$-magnetism in layered platinum diselenide
• Impurity-induced excitations in a topological two-dimensional ferromagnet/superconductor van der Waals moiré heterostructure
• Large Rashba Spin-Orbit Coupling and High-Temperature Quantum Anomalous Hall Effect in Re-Intercalated Graphene/CrI${}_3$ Heterostructure
• Manipulating Spin-Lattice Coupling in Layered Magnetic Topological Insulator Heterostructure $via$ Interface Engineering
• Edge states in proximitized graphene ribbons and flakes in a perpendicular magnetic field: emergence of lone pseudohelical pairs and pure spin-current states
• Boosting proximity spin orbit coupling in graphene/WSe${}_2$ heterostructures via hydrostatic pressure