Abstract
The authors design in silico a graphene-based van der Waals heterostructure where purely two-dimensional electronic transport generates nonequilibrium spin density in all spatial directions, due to scattering of impurities or potential barriers.
Highlights
The spin-orbit (SO) torque [1] is a phenomenon in which unpolarized charge current injected parallel to the interface of a bilayer of ferromagnetic metal (FM) and SO-coupled material induces magnetization dynamics of the FM layer
Further optimization could be achieved by using van der Waals heterostructures [8] of very recently dis
Using first-principles calculations we design a van der Waals (vdW) heterostructure where graphene is sandwiched between semiconducting monolayers of ferromagnet Cr2Ge2Te6
Summary
The spin-orbit (SO) torque [1] is a phenomenon in which unpolarized charge current injected parallel to the interface of a bilayer of ferromagnetic metal (FM) and SO-coupled material induces magnetization dynamics of the FM layer. Unlike isolated graphene, which is nonmagnetic and hosts minuscule intrinsic SOC [30], doubly proximitized graphene within a Cr2Ge2Te6/graphene/WS2 trilayer offers a versatile “theoretical laboratory” in which we can differentiate between competing mechanisms of SO torque and thereby learn how to control them This can be accomplished by switching on and off different terms in the first-principles calculations
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