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.

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Cited by in corpus (17)

• 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
• 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
• Omnidirectional spin-to-charge conversion in graphene/NbSe${}_2$ 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
• Control of charge-spin interconversion in van der Waals heterostructures with chiral charge density waves
• Room-temperature anisotropic in-plane spin dynamics in graphene induced by PdSe${}_2$ proximity
• 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
• 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
• Radial Rashba spin-orbit fields in commensurate twisted transition-metal dichalcogenide bilayers