Strong bulk spin-orbit torques quantified in the van der Waals ferromagnet Fe3GeTe2

Abstract

The recent emergence of magnetic van der Waals materials allows for the investigation of current induced magnetization manipulation in two dimensional materials. Uniquely, Fe3GeTe2 has a crystalline structure that allows for the presence of bulk spin-orbit torques (SOTs), that we quantify in a Fe3GeTe2 flake. From the symmetry of the measured torques, we identify the current induced effective fields using harmonic analysis and find dominant bulk SOTs, which arise from the symmetry in the crystal structure. Our results show that Fe3GeTe2 uniquely can exhibit bulk SOTs in addition to the conventional interfacial SOTs enabling magnetization manipulation even in thick single layers without the need for complex multilayer engineering.

19 pages 4 figures

References in corpus (5)

• Magnetic 2D materials and heterostructures
• Highly efficient spin-orbit torque and switching of layered ferromagnet Fe3GeTe2
• Current Control of Magnetism in Two-Dimensional Fe3GeTe2
• Gigantic current control of coercive field and magnetic memory based on nm-thin ferromagnetic van der Waals Fe3GeTe2
• Current-driven magnetization switching in a van der Waals ferromagnet Fe3GeTe2

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• All van der Waals three-terminal SOT-MRAM realized by topological ferromagnet Fe3GeTe2
• Imaging current control of magnetization in Fe${}_3$GeTe${}_2$ with a widefield nitrogen-vacancy microscope
• Magnetoelectric effect in van der Waals magnets
• Hidden interplay of current-induced spin and orbital torques in bulk Fe${}_3$GeTe${}_2$
• Angular dependence of spin-orbit torque in monolayer $F{e}_{3}GeT{e}_2$
• Artificially creating emergent interfacial antiferromagnetism and its manipulation in a magnetic van-der-Waals heterostructure
• Interplay between local moment and itinerant magnetism in the layered metallic antiferromagnet TaFe${}_{1.14}$Te${}_3$