Resolving spin currents and spin densities generated by charge-spin interconversion in systems with reduced crystal symmetry

Abstract

The ability to control the generation of spins in arbitrary directions is a long-sought goal in spintronics. Charge-to-spin interconversion (CSI) phenomena depend strongly on symmetry. Systems with reduced crystal symmetry allow anisotropic CSI with unconventional components, where charge and spin currents and the spin polarization are not mutually perpendicular to each other. Here, we demonstrate experimentally that the CSI in graphene-WTe2 induces spins with components in all three spatial directions. By performing multi-terminal nonlocal spin precession experiments, with specific magnetic field orientations, we discuss how to disentangle the CSI from the spin Hall and inverse spin galvanic effects.

References in corpus (10)

• Direct electronic measurement of the spin Hall effect
• Emergent Phenomena Induced by Spin-Orbit Coupling at Surfaces and Interfaces
• Observation of the Quantum Spin Hall Effect up to 100 Kelvin in a Monolayer Crystal
• Van der Waals heterostructures for spintronics and opto-spintronics
• 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
• Onsager Relations in Coupled Electric, Thermoelectric and Spin Transport: The Ten-Fold Way
• Spin Hall effect and Weak Antilocalization in Graphene/Transition Metal Dichalcogenide Heterostructures
• Intrinsic Spin Hall Conductivity of MoTe2 and WTe2 Semimetals
• Staggered spin Hall conductivity

Cited by in corpus (16)

• Charge-to-spin conversion in twisted graphene/WSe${}_2$ heterostructures
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• Twist-angle tunable spin texture in WSe${}_2$/graphene van der Waals heterostructures
• Unconventional charge-to-spin conversions in graphene/MoTe2 van der Waals heterostructures
• A seamless graphene spin valve based on proximity to van der Waals magnet Cr${}_2$Ge${}_2$Te${}_6$
• Orbitronics in Two-dimensional Materials
• Room-temperature anisotropic in-plane spin dynamics in graphene induced by PdSe${}_2$ proximity
• Control of charge-spin interconversion in van der Waals heterostructures with chiral charge density waves
• Gate-tunable spin Hall effect in an all-light-element heterostructure: graphene with copper oxide
• Spintronics in 2D graphene-based van der Waals heterostructures
• Out-of-plane spin-to-charge conversion at low temperatures in graphene/MoTe${}_2$ heterostructures
• Ferroelectric switching control of spin current in graphene proximitized by In${}_2$Se${}_3$
• Impact of the out-of-plane conductivity on spin transport evaluation in a van der Waals material
• Radial Rashba spin-orbit fields in commensurate twisted transition-metal dichalcogenide bilayers
• Gate-tunable charge-spin interconversion in graphene/heavy-metal heterostructures
• Gate tunable spin-charge interconversion in a graphene/ReS${}_2$ heterostructure up to room temperature