Twist Angle Controlled Collinear Edelstein Effect in van der Waals Heterostructures

Abstract

The generation of spatially homogeneous spin polarization by application of electric current is a fundamental manifestation of symmetry-breaking spin--orbit coupling (SOC) in solid-state systems, which underpins a wide range of spintronic applications. Here, we show theoretically that twisted van der Waals heterostructures with proximity-induced SOC are candidates par excellence to realize exotic spin-charge transport phenomena due to their highly tunable momentum-space spin textures. Specifically, we predict that graphene/group-VI dichalcogenide bilayers support room temperature spin--current responses that can be manipulated via twist-angle control. For critical twist angles, the non-equilibrium spin density is pinned parallel to the applied current. This effect is robust against twist-angle disorder, with graphene/${\text{WSe}}_2$ possessing a critical angle (purely collinear response) of ${\theta }_c\simeq 14^{\circ }$. A simple electrical detection scheme to isolate the collinear Edelstein effect is proposed.

arXiv comment12 pages, 6 figures, includes supplemental material. Accepted version in Physical Review B Letters

References in corpus (52)

• Van der Waals heterostructures
• Magic-angle graphene superlattices: a new platform for unconventional superconductivity
• 2D materials and van der Waals heterostructures
• Moire bands in twisted double-layer graphene
• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Graphene Spintronics
• Twistable electronics with dynamically rotatable heterostructures
• Proximity-induced ferromagnetism in graphene revealed by anomalous Hall effect
• Spin-Orbit Proximity Effect in Graphene
• Twistronics: Manipulating the Electronic Properties of Two-dimensional Layered Structures through their Twist Angle
• Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
• Colloquium: Spintronics in graphene and other two-dimensional materials
• Electronic structure of turbostratic graphene
• Strong interface-induced spin-orbit coupling in graphene on WS2
• Mapping the twist angle and unconventional Landau levels in magic angle graphene
• Energy Spectrum and Quantum Hall Effect in Twisted Bilayer Graphene
• Strong interfacial exchange field in the graphene/EuS heterostructure
• Numerical studies of confined states in rotated bilayers of graphene
• Trivial and inverted Dirac bands, and emergence of quantum spin Hall states in graphene on transition-metal dichalcogenides
• Unconventional Superconductivity and Density Waves in Twisted Bilayer Graphene
• Room temperature spin Hall effect in graphene/MoS${}_2$ van der Waals heterostructures
• Strongly anisotropic spin relaxation in graphene/transition metal dichalcogenide heterostructures at room temperature
• \textit{Ab-initio} Tight-Binding Hamiltonian for Transition Metal Dichalcogenides
• Charge-to-Spin Conversion by the Rashba-Edelstein Effect in 2D van der Waals Heterostructures up to Room Temperature
• Large Proximity-Induced Spin Lifetime Anisotropy in Transition Metal Dichalcogenide/Graphene Heterostructures
• Controlling spin relaxation in hexagonal BN-encapsulated graphene with a transverse electric field
• Persistent Spin Textures in Semiconductor Nanostructures
• Tunable room-temperature spin galvanic and spin Hall effects in van der Waals heterostructures
• Origin and magnitude of 'designer' spin-orbit interaction in graphene on semiconducting transition metal dichalcogenides
• Nanosecond spin lifetimes in single- and few-layer graphene-hBN heterostructures at room temperature
• Strong electron-hole symmetric Rashba spin-orbit coupling in graphene/monolayer transition metal dichalcogenide heterostructures
• Electrical and Thermal Generation of Spin Currents by Magnetic Graphene
• Twist-angle dependence of the proximity spin-orbit coupling in graphene on transition-metal dichalcogenides
• Optimal charge-to-spin conversion in graphene on transition metal dichalcogenides
• Strong Spin-Orbit Interaction Induced in Graphene by Monolayer WS${}_2$
• Induced spin-orbit coupling in twisted graphene-TMDC heterobilayers: twistronics meets spintronics
• Spin Hall effect and Weak Antilocalization in Graphene/Transition Metal Dichalcogenide Heterostructures
• Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
• Anisotropic current-induced spin accumulation in the two-dimensional electron gas with spin-orbit coupling
• Magnetotransport in heterostructures of transition metal dichalcogenides and graphene
• Electrical spin injection, transport, and detection in graphene-hexagonal boron nitride van der Waals heterostructures: progress and perspectives
• Gate-Tunable Reversible Rashba-Edelstein Effect in a Few-Layer Graphene/2H-TaS2 Heterostructure at Room Temperature
• Heterostructures of graphene and hBN: electronic, spin-orbit, and spin relaxation properties from first principles
• Covariant conservation laws and the spin Hall effect in Dirac-Rashba systems
• Scattering theory of spin-orbit active adatoms on graphene
• Spin precession in anisotropic media
• Measuring anisotropic spin relaxation in graphene
• Skew-scattering-induced giant antidamping spin-orbit torques: Collinear and out-of-plane Edelstein effects at two-dimensional material/ferromagnet interfaces
• Unambiguous Electrical Detection of Spin-Charge Conversion in Lateral Spin-Valves
• Microscopic linear response theory of spin relaxation and relativistic transport phenomena in graphene
• Theory of spin-charge-coupled transport in proximitized graphene: An SO(5) algebraic approach
• Theory of Spin Injection in Two-dimensional Metals with Proximity-Induced Spin-Orbit Coupling

Cited by in corpus (5)

• Charge-to-spin conversion in twisted graphene/WSe${}_2$ heterostructures
• Unconventional charge-to-spin conversions in graphene/MoTe2 van der Waals heterostructures
• Strong manipulation of the valley splitting upon twisting and gating in MoSe${}_2$/CrI${}_3$ and WSe${}_2$/CrI${}_3$ van der Waals heterostructures
• Spin-orbit and exchange proximity couplings in graphene/1T-TaS${}_2$ heterostructure triggered by a charge density wave
• Tunable superconductivity and Möbius Fermi surfaces in an inversion-symmetric twisted van der Waals heterostructure