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Twist angle controlled collinear Edelstein effect in van der Waals heterostructures

Twist angle controlled collinear Edelstein effect in van der Waals heterostructures

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VENERI, Alessandro, David T. S. PERKINS, Csaba G. PÉTERFALVI, Aires FERREIRA, 2022. Twist angle controlled collinear Edelstein effect in van der Waals heterostructures. In: Physical Review B. American Physical Society (APS). 106(8), L081406. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.106.L081406

@article{Veneri2022Twist-59026, title={Twist angle controlled collinear Edelstein effect in van der Waals heterostructures}, year={2022}, doi={10.1103/PhysRevB.106.L081406}, number={8}, volume={106}, issn={2469-9950}, journal={Physical Review B}, author={Veneri, Alessandro and Perkins, David T. S. and Péterfalvi, Csaba G. and Ferreira, Aires}, note={Article Number: L081406} }

Ferreira, Aires Perkins, David T. S. Péterfalvi, Csaba G. Attribution 4.0 International Veneri, Alessandro Veneri, Alessandro 2022-11-04T09:59:49Z 2022-11-04T09:59:49Z Twist angle controlled collinear Edelstein effect in van der Waals heterostructures 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 nonequilibrium spin density is pinned parallel to the applied current. This effect is robust against twist-angle disorder, with graphene/WSe<sub>2</sub> possessing a critical angle (purely collinear response) of θc≃14∘. A simple electrical detection scheme to isolate the collinear Edelstein effect is proposed. Perkins, David T. S. 2022 eng Ferreira, Aires Péterfalvi, Csaba G.

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