Spin Proximity Effects in Graphene/Topological Insulator Heterostructures

Abstract

Enhancing the spin-orbit interaction in graphene, via proximity effects with topological insulators, could create a novel 2D system that combines nontrivial spin textures with high electron mobility. In order to engineer practical spintronics applications with such graphene/topological insulator (Gr/TI) heterostructures, an understanding of the hybrid spin-dependent properties is essential. {However to date, despite the large number of experimental studies on Gr/TI heterostructures reporting a great variety of remarkable (spin) transport phenomena, little is known about the true nature of the spin texture of the interface states as well as their role on the measured properties. Here we use {\it ab initio} simulations and tight-binding models to determine the precise spin texture of electronic states in graphene interfaced with a Bi${}_2$Se${}_3$ topological insulator. Our calculations predict the emergence of a giant spin lifetime anisotropy in the graphene layer, which should be a measurable hallmark of spin transport in Gr/TI heterostructures, and suggest novel types of spin devices

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Cited by in corpus (42)

• Van der Waals heterostructures for spintronics and opto-spintronics
• Spin transport in graphene/transition metal dichalcogenide heterostructures
• Proximity exchange effects in MoSe${}_2$ and WSe${}_2$ heterostructures with CrI${}_3$: twist angle, layer, and gate dependence
• Transport in two-dimensional topological materials: recent developments in experiment and theory
• Twist-angle dependence of the proximity spin-orbit coupling in graphene on transition-metal dichalcogenides
• Quantum Anomalous Hall Effects in Graphene from Proximity-Induced Uniform and Staggered Spin-Orbit and Exchange Coupling
• Twist-angle dependent proximity induced spin-orbit coupling in graphene/transition-metal dichalcogenide heterostructures
• Gate-tunable Spin-Galvanic Effect in Graphene Topological insulator van der Waals Heterostructures at Room Temperature
• Spin-split band hybridization in graphene proximitized with $\alpha$-RuCl${}_3$ nanosheets
• Determining the Rashba parameter from the bilinear magnetoresistance response in a two-dimensional electron gas
• Resonant photovoltaic effect in doped magnetic semiconductors
• All-Dry Transfer of Graphene Film by Van der Waals Interactions
• Twist- and gate-tunable proximity spin-orbit coupling, spin relaxation anisotropy, and charge-to-spin conversion in heterostructures of graphene and transition-metal dichalcogenides
• Substrate induced nanoscale resistance variation in epitaxial graphene
• Engineering Proximity Exchange by Twisting: Reversal of Ferromagnetic and Emergence of Antiferromagnetic Dirac Bands in Graphene/Cr${}_2$Ge${}_2$Te${}_6$
• Bilayer graphene encapsulated within monolayers of WS${}_2$ or Cr${}_2$Ge${}_2$Te${}_6$: Tunable proximity spin-orbit or exchange coupling
• Manipulation of Spin Transport in Graphene/Transition Metal Dichalcogenide Heterobilayers upon Twisting
• Heterostructures of graphene and topological insulators Bi${}_2$Se${}_3$, Bi${}_2$Te${}_3$, and Sb${}_2$Te${}_3$
• Proximity spin-orbit and exchange coupling in ABA and ABC trilayer graphene van der Waals heterostructures
• Single and bilayer graphene on the topological insulator Bi${}_2$Se${}_3$: Electronic and spin-orbit properties from first principles
• Towards Topological Quasi-Freestanding Stanene via Substrate Engineering
• Van der Waals heterostructures with spin-orbit coupling
• Twist-angle dependent proximity induced spin-orbit coupling in graphene/topological insulator heterostructures
• Chiral Majorana fermions in graphene from proximity-induced superconductivity
• Defect-free SnTe topological crystalline insulator nanowires grown by molecular beam epitaxy on graphene
• Magic angle conditions for twisted 3D topological insulators
• Universal spin diffusion length in polycrystalline graphene
• Proximity-Induced Spin-Orbit Coupling in Graphene-Bi${}_{1.5}$Sb${}_{0.5}$Te${}_{1.7}$Se${}_{1.3}$ Heterostructures
• Spin-Hall effect due to the bulk states of topological insulators: Extrinsic contribution to the conserved spin current
• Spin transfer torques due to the bulk states of topological insulators
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• Room temperature nonlocal detection of charge-spin interconversion in a topological insulator
• Atomic Scale Quantum Anomalous Hall Effect in Monolayer Graphene/$\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$ Heterostructure
• Edge states in proximitized graphene ribbons and flakes in a perpendicular magnetic field: emergence of lone pseudohelical pairs and pure spin-current states
• Topological Phases in Fractals: Local Spin Chern Marker in the Sierpinski carpet Kane-Mele-Rashba Model
• Spintronic Quantum Phase Transition in a $Graphene/P{b}_{0.24}S{n}_{0.76}Te$ Heterostructure with Giant Rashba Spin-Orbit Coupling
• Spin-charge coupled transport in van der Waals systems with random tunneling
• Giant Spin Transport Anisotropy in Magnetic Topological Insulators
• Moiré spintronics: Emergent phenomena, material realization and machine learning accelerating discovery
• Moiré Folded Helical States at the Interfaces of Heterostructures
• Strongly Correlated Transport in Topological Y-Junction Devices
• Valley-Polarized Quantum Anomalous Hall Phase in Bilayer Graphene with Layer-Dependent Proximity Effects