Large Proximity-Induced Spin Lifetime Anisotropy in Transition Metal Dichalcogenide/Graphene Heterostructures

Abstract

Van-der-Waals heterostructures have become a paradigm for designing new materials and devices, in which specific functionalities can be tailored by combining the properties of the individual 2D layers. A single layer of transition metal dichalcogenide (TMD) is an excellent complement to graphene (Gr), since the high quality of charge and spin transport in Gr is enriched with the large spin-orbit coupling of the TMD via proximity effect. The controllable spin-valley coupling makes these heterostructures particularly attractive for spintronic and opto-valleytronic applications. In this work, we study spin precession in a monolayer MoSe2/Gr heterostructure and observe an unconventional, dramatic modulation of the spin signal, showing one order of magnitude longer lifetime of out-of-plane spins (40 ps) compared with that of in-plane spins (3.5 ps). This demonstration of a large spin lifetime anisotropy in TMD/Gr heterostructures, is a direct evidence of induced spin-valley coupling in Gr and provides an accessible route for manipulation of spin dynamics in Gr, interfaced with TMDs.

Main manuscript(6 pages, 3 figures), supplementary info(19 pages, 10 figures)

References in corpus (13)

• 2D materials and van der Waals heterostructures
• Graphene Spintronics
• Spin-Orbit Proximity Effect in Graphene
• Weak localisation in graphene flakes
• Visibility of dichalcogenide nanolayers
• Fast pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride
• Opto-Valleytronic Spin Injection in Monolayer MoS2/Few-Layer Graphene Hybrid Spin Valves
• Tunable spin-orbit coupling and symmetry-protected edge states in graphene/WS${}_2$
• Spin transport in high quality suspended graphene devices
• Spin Hall effect and Weak Antilocalization in Graphene/Transition Metal Dichalcogenide Heterostructures
• Contact induced spin relaxation in Hanle spin precession measurements
• Optospintronics in graphene via proximity coupling
• Graphene-WS${}_2$ heterostructures for tunable spin injection and spin transport

Cited by in corpus (57)

• Van der Waals heterostructures for spintronics and opto-spintronics
• Spin-orbit driven band inversion in bilayer graphene by van der Waals proximity effect
• 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
• Spin-split band hybridization in graphene proximitized with $\alpha$-RuCl${}_3$ nanosheets
• Gate tunability of highly efficient spin-to-charge conversion by spin Hall effect in graphene proximitized with WSe${}_2$
• Charge-to-spin conversion in twisted graphene/WSe${}_2$ heterostructures
• Twist- and gate-tunable proximity spin-orbit coupling, spin relaxation anisotropy, and charge-to-spin conversion in heterostructures of graphene and transition-metal dichalcogenides
• Determining spin-orbit coupling in graphene by quasiparticle interference imaging
• Contact resistance and interfacial engineering: Advances in high-performance 2D-TMD based devices
• Spin transport in high-mobility graphene on WS${}_2$ substrate with electric-field tunable proximity spin-orbit interaction
• Twist Angle Controlled Collinear Edelstein Effect in van der Waals Heterostructures
• Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe${}_2$
• Proximity effects in graphene on monolayers of transition-metal phosphorus trichalcogenides MPX${}_3$
• Unconventional charge-to-spin conversions in graphene/MoTe2 van der Waals heterostructures
• Spin Hall Effect in Bilayer Graphene Combined with an Insulator up to Room Temperature
• Strain Anisotropy Driven Spontaneous Formation of Nanoscrolls from Two-Dimensional Janus Layers
• Experimental observation of spin-split energy dispersion in high-mobility single-layer graphene/WSe2 heterostructures
• Emergent correlated phases in rhombohedral trilayer graphene induced by proximity spin-orbit and exchange coupling
• Twist-angle dependent proximity induced spin-orbit coupling in graphene/topological insulator heterostructures
• Band Gap Opening in Bilayer Graphene-CrCl${}_3$/CrBr${}_3$/CrI${}_3$ van der Waals Interfaces
• Room-temperature anisotropic in-plane spin dynamics in graphene induced by PdSe${}_2$ proximity
• Robust Spin Interconnect with Isotropic Spin Dynamics in Chemical Vapour Deposited Graphene Layers and Boundaries
• All-electric spin device operation using the Weyl semimetal, WTe${}_2$, at room temperature
• Robust Zeeman-type band splitting in sliding ferroelectrics
• Swapping exchange and spin-orbit induced correlated phases in proximitized Bernal bilayer graphene
• Two-Dimensional Higher-Order Topological Metals
• Spin Hall Effect: Symmetry Breaking, Twisting, and Giant Disorder Renormalization
• Giant asymmetric proximity-induced spin-orbit coupling in twisted graphene/SnTe heterostructure
• Spin Hall and inverse spin galvanic effects in graphene with strong interfacial spin-orbit coupling: a quasi-classical Green's function approach
• Collective spin modes in Fermi liquids with spin-orbit coupling
• Charge-spin conversion signal in WTe2 van der Waals hybrid devices with a geometrical design
• Valley-controlled transport in graphene/ WSe${}_2$ heterostructures under an off-resonant polarized light
• Stabilizing the inverted phase of a WSe${}_2$/BLG/WSe${}_2$ heterostructure via hydrostatic pressure
• Rashba Effect and Raman Spectra of Tl${}_2$O/PtS${}_2$ Heterostructure
• Giant Valley-Polarized Spin Splittings in Magnetized Janus Pt Dichalcogenides
• Twisted bilayer graphene reveals its flat bands under spin pumping
• Spin Seebeck Effect in Graphene
• Carrier Drift Control of Spin Currents in Graphene-Based Spin-Current Demultiplexers
• Valley-dependent transport through graphene quantum dots due to proximity-induced, staggered spin-orbit couplings
• Transport Signatures of Radial Rashba Spin-Orbit Coupling at Ferromagnet/Superconductor Interfaces
• Terahertz Spin-Light Coupling in Proximitized Dirac Materials
• Ferroelectric switching control of spin current in graphene proximitized by In${}_2$Se${}_3$
• Spintronic Quantum Phase Transition in a $Graphene/P{b}_{0.24}S{n}_{0.76}Te$ Heterostructure with Giant Rashba Spin-Orbit Coupling
• Spin and Valley Polarized Multiple Fermi Surfaces of α-RuCl${}_3$/Bilayer Graphene Heterostructure
• Dirac-Rashba fermions and quantum valley Hall insulators in graphene-based 2D heterostructures
• The emergence of interface states in graphene/transition metal dichalcogenides heterostructure with lateral interface
• Ultrafast Spin Injection in Graphene via Dynamical Carrier Filtering at Transition Metal Dichalcogenide Interfaces
• Room-temperature spin-lifetime anisotropy exceeding 60 in bilayer graphene spin valves proximity coupled to WSe${}_2$
• Giant Spin Transport Anisotropy in Magnetic Topological Insulators
• Increasing the proximity induced spin-orbit coupling in bilayer graphene/WSe${}_2$ heterostructures with pressure
• Persistent spin texture preserved by local symmetry in graphene/WTe${}_2$ heterostructure
• Gate tunable spin-charge interconversion in a graphene/ReS${}_2$ heterostructure up to room temperature
• Proximity spin-orbit coupling in graphene on alloyed transition metal dichalcogenides
• Valley-Polarized Quantum Anomalous Hall Phase in Bilayer Graphene with Layer-Dependent Proximity Effects
• Zero-field spin resonance in graphene with proximity-induced spin-orbit coupling
• Hanle lineshapes and spin-rotation signatures from in-plane anisotropic spin relaxation in heterogeneous spin devices